Examples of Mammals: From Land to Sea

Mammals are a class of vertebrate animals characterized by the presence of mammary glands, hair or fur, and three middle ear bones. This article provides a curated list of mammal examples across terrestrial, aquatic, and flying habitats, with descriptions of their ecological roles and adaptations. The content draws on peer-reviewed research to explain how mammal diversity is distributed, what drives species richness in different environments, and why habitat structure matters for mammal communities. For students, researchers, and life-science professionals, this material supports educational use and field identification. For farmers and land managers, understanding mammal diversity patterns informs habitat conservation decisions and wildlife management practices on working lands.

What Defines a Mammal

Mammals belong to the class Mammalia within the phylum Chordata. All mammals share several defining characteristics that distinguish them from other vertebrates. These include hair or fur at some stage of life, mammary glands that produce milk for offspring, and a unique jaw structure with three middle ear bones. Mammals are endothermic, meaning they regulate their body temperature internally, and most give birth to live young, with the monotremes as the exception since they lay eggs.

The class Mammalia is divided into three main groups based on reproductive strategies. Monotremes, such as the platypus and echidna, lay eggs. Marsupials, including kangaroos and opossums, give birth to relatively undeveloped young that continue development in a pouch. Placental mammals, which include humans, whales, and rodents, carry their young through a placenta that provides nutrients during gestation.

Mammals occupy nearly every habitat on Earth, from the deepest oceans to high mountain ranges and arid deserts. Their adaptive radiation has produced an extraordinary range of body sizes, from the bumblebee bat weighing about two grams to the blue whale exceeding 150 tonnes. This diversity of form and function makes mammals a central subject in ecology, evolutionary biology, and conservation science.

At a Glance: Mammal Examples by Habitat

The following table presents representative mammal examples across major habitat types, their key adaptations, and their ecological significance. This summary supports quick reference for educational purposes and field identification.

Terrestrial Mammals: Diversity on Land

Terrestrial mammals represent the largest and most familiar group within Mammalia. They inhabit forests, grasslands, deserts, and mountains, with adaptations that reflect their specific environments. The diversity of terrestrial mammals is strongly influenced by habitat structure, climate, and productivity.

Research on tropical forest mammals in the Udzungwa Mountains of Tanzania demonstrated that habitat surface area, a measure of structural complexity, significantly predicts species occupancy and functional diversity. The study found that carnivorous and social species showed the strongest positive response to increased habitat surface area, suggesting that complex forest floors provide more resources and niches for these mammals (Tropical forest mammal occupancy and functional diversity increase with microhabitat surface area). For land managers, this finding indicates that preserving ground-level structural complexity, including fallen logs, leaf litter, and understory vegetation, supports a wider range of mammal species.

In the Cerrado biome of Brazil, researchers surveyed small mammals across 45 sites and found that habitat heterogeneity and geographic location were the main drivers of species richness, abundance, and composition. The study documented 12 to 21 species per site, with strong habitat selectivity among forest dwellers, savanna specialists, and grassland inhabitants. Species turnover across sites was high, indicating that preserving a mosaic of habitats is essential for maintaining regional mammal diversity (Habitat Heterogeneity and Geographic Location as Major Drivers of Cerrado Small Mammal Diversity Across Multiple Spatial Scales).

Large Terrestrial Herbivores

Large herbivorous mammals include elephants, rhinoceroses, giraffes, and various deer and antelope species. These animals play critical roles in shaping vegetation structure and nutrient cycling. The African elephant, for example, modifies landscapes by uprooting trees, creating paths, and dispersing seeds over long distances. Research on global mammal declines found that herbivores are disproportionately likely to be declining from harvest, with important implications for plant communities and nutrient cycling (The decline of mammal functional and evolutionary diversity worldwide).

For farmers, large herbivores can present both opportunities and challenges. Managed grazing systems that mimic natural herbivore movements can improve grassland health, while uncontrolled populations may damage crops and compete with livestock. Understanding the habitat requirements of native herbivores helps in designing fencing, water sources, and buffer zones that reduce conflict.

Small Terrestrial Mammals

Small mammals, including rodents, shrews, and hedgehogs, form the foundation of many terrestrial food webs. A long-term review of small mammal communities in Lithuania, covering 1975 to 2021, revealed significant shifts in species composition and trophic structure. The proportion of granivores increased from 6.9% in 1975 to 1980 to 45.4% in 2011 to 2020 and 54.7% in 2021, while omnivores and insectivores decreased. The yellow-necked mouse (Apodemus flavicollis) and striped field mouse (Apodemus agrarius) increased notably, with the latter rising from 1.0% to 25.3% over the study period. These changes coincided with land-use changes in 1990 and subsequent habitat alterations (Small Mammal Diversity Changes in a Baltic Country, 1975-2021: A Review).

Rodents of the genus Apodemus are among the most widespread and abundant small mammals in Europe and play a central role in the ecology of numerous zoonotic pathogens. Their ecological plasticity, high population densities, and frequent infestation by arthropod vectors contribute to the maintenance and transmission of bacterial, viral, and protozoan agents. Infection dynamics are shaped by host demography, population density, community composition, habitat configuration, and climatic variability (From reservoirs to ecological integrators: the role of European Apodemus spp. in vector-borne zoonotic pathogens). Farmers and rural residents should be aware that small mammal populations can influence disease risk, and monitoring rodent abundance near livestock operations is a prudent management practice.

Aquatic Mammals: Life in Water

Aquatic mammals include fully aquatic species such as whales, dolphins, and manatees, as well as semi-aquatic species like seals, otters, and beavers. These mammals exhibit remarkable adaptations for life in water, including streamlined bodies, modified limbs for swimming, and physiological mechanisms for diving and thermoregulation.

The blue whale, the largest animal to have ever lived, exemplifies the extreme end of aquatic mammal adaptation. Baleen plates allow it to filter massive quantities of krill and small fish from the water. Blue whales influence ocean ecosystems through nutrient cycling, as their fecal plumes fertilize surface waters and support phytoplankton growth.

Dolphins and other cetaceans use echolocation to navigate and hunt in murky or dark waters. Their social structures and communication systems are among the most complex in the animal kingdom. Research on mammal virus diversity has shown that bats, another highly mobile mammal group, have experienced rapid rearrangement of species ranked viral richness due to intensified surveillance since the early 2000s (Mammal virus diversity estimates are unstable due to accelerating discovery effort). This finding underscores the importance of continued monitoring for aquatic mammals as well, particularly in coastal areas where human activity overlaps with marine habitats.

Marine Mammals and Coastal Ecosystems

Marine mammals occupy a range of ecological niches, from the deep-diving sperm whale to the grazing manatee. Seals and sea lions are semi-aquatic, spending time both in water and on land for breeding and molting. Sea otters are keystone predators in kelp forest ecosystems, controlling sea urchin populations that would otherwise overgraze kelp.

For coastal farmers and aquaculture operators, marine mammals can create conflicts. Seals may prey on fish farms, and dolphins may interact with fishing gear. Understanding the seasonal movements and habitat use of marine mammals helps in designing deterrent systems and adjusting fishing practices to reduce bycatch.

Freshwater Mammals

Freshwater mammals include beavers, otters, and water shrews. Beavers are ecosystem engineers whose dam-building activities create wetlands that support diverse plant and animal communities. Their ponds store water, filter sediments, and provide habitat for fish, amphibians, and waterfowl. However, beaver activity can also flood agricultural land and damage infrastructure, requiring careful management strategies.

Otters are indicators of water quality and healthy aquatic ecosystems. Their presence suggests a functioning food web with adequate fish populations. Farmers with ponds or streams can monitor otter activity as a sign of ecosystem health, while also implementing measures to protect aquaculture stocks if needed.

Flying Mammals: Bats and Gliding Species

Bats are the only mammals capable of true powered flight, with wings formed from a membrane stretched between elongated finger bones. They are found on every continent except Antarctica and occupy diverse ecological roles, including insectivory, frugivory, nectarivory, and carnivory.

The little brown bat consumes up to half its body weight in insects each night, providing natural pest control that benefits agriculture. A single colony of bats can consume millions of insects annually, reducing the need for chemical pesticides. Research on mammal virus diversity has highlighted bats as a group with particularly high viral richness, though the authors caution that current estimates are unstable due to accelerating discovery effort and sampling biases (Mammal virus diversity estimates are unstable due to accelerating discovery effort). This does not diminish their ecological value but underscores the need for careful handling and monitoring protocols.

Flying squirrels and other gliding mammals do not achieve true flight but can travel considerable distances using a gliding membrane. These species are typically arboreal and depend on continuous forest canopies for movement. Habitat fragmentation poses a significant threat to gliding mammals, as gaps in the canopy prevent them from traveling between trees.

Bats in Agricultural Landscapes

Bats provide valuable ecosystem services to agriculture through insect control, pollination, and seed dispersal. Insectivorous bats can reduce pest populations in crops, potentially lowering pesticide costs for farmers. Nectar-feeding bats pollinate plants including agave, which is used to produce tequila, and various fruits.

Farmers can support bat populations by preserving roosting sites such as old trees, caves, and buildings, and by installing bat boxes where natural roosts are scarce. Reducing pesticide use and maintaining hedgerows and forest edges also benefit bat populations. However, bats can occasionally roost in barns and other farm structures, creating concerns about guano accumulation and disease transmission. Professional wildlife management may be needed to exclude bats safely while providing alternative roosting sites.

Habitat Structure and Mammal Diversity

Habitat structure is a primary determinant of mammal diversity across spatial scales. Research has shown that structural complexity, measured as habitat surface area, supports higher animal diversity in tropical forests. The study in the Udzungwa Mountains found that habitat surface area had a significant positive relationship with functional dispersion, indicating that more complex habitats support mammals with a wider range of ecological traits (Tropical forest mammal occupancy and functional diversity increase with microhabitat surface area).

In African savannas, researchers tested the assumption that mammal functional diversity is positively associated with habitat heterogeneity using data from 141 sites. They found that the number of habitat types and the density of habitat patches showed a modest positive relationship with most functional diversity metrics. The locomotor and trophic richness of mammal communities were positively associated with habitat heterogeneity, suggesting that these metrics may be useful for reconstructing habitat characteristics from fossil assemblages (Mammal functional diversity and habitat heterogeneity: Implications for hominin habitat reconstruction).

Elevation and Climate Effects

Elevation range and contemporary climate determine the taxonomic, functional, and phylogenetic diversity of forest mammals, according to research published in Biodiversity and Conservation (Elevation range and contemporary climate determine the taxonomic, functional and phylogenetic diversity of forest mammals). This finding has practical implications for land management in mountainous regions, where elevational gradients create distinct habitat zones that support different mammal communities.

For farmers in mountainous areas, understanding how elevation affects mammal diversity helps in planning land use and conservation activities. Maintaining corridors between elevational zones allows mammals to move in response to seasonal changes and climate shifts.

Habitat Fragmentation and Loss

Habitat fragmentation amplifies threats from habitat loss to mammal diversity across the world's terrestrial ecoregions. A species-area model that integrates habitat size and connectivity predicted that, on average, 10 mammal species are committed to extinction due to habitat loss and fragmentation, with an average of 9% of loss due to fragmentation alone (Habitat fragmentation amplifies threats from habitat loss to mammal diversity across the world's terrestrial ecoregions). The model considers species habitat preference and dispersal capacity, patch size, inter-patch distances, and landscape matrix permeability.

Farmers and land managers can mitigate fragmentation effects by maintaining hedgerows, riparian buffers, and uncultivated patches that provide connectivity between habitat fragments. Conservation easements and cooperative agreements among neighboring landowners can create larger contiguous habitat areas that support viable mammal populations.

Functional Diversity and Ecosystem Function

Functional diversity refers to the range of ecological traits present in a community, including body size, diet, locomotion, and activity patterns. Research has shown that mammal functional diversity is closely linked to ecosystem function and resilience.

A global assessment of how anthropogenic threats drive declines in functional diversity and phylogenetic diversity found that habitat loss and harvest are the biggest drivers of ongoing losses. Declines in functional diversity in high-biodiversity countries, particularly in Southeast Asia and South America, are greater than would be expected if species losses were random with respect to ecological function. Frugivores are particularly likely to be declining from both harvest and habitat loss, with potential ramifications for seed dispersal and forest carbon storage (The decline of mammal functional and evolutionary diversity worldwide).

Productivity and Functional Diversity

Tropical mammal functional diversity increases with primary productivity but decreases with anthropogenic disturbance, according to research using the Tropical Ecology Assessment and Monitoring Network. The study found that mammal community functional dispersion increased with primary productivity, while functional richness decreased with human-induced local extinctions. The positive association between occupancy-weighted functional dispersion and primary productivity suggests that unique functional traits may be more beneficial in more productive ecosystems (Tropical mammal functional diversity increases with productivity but decreases with anthropogenic disturbance).

For farmers, this research indicates that maintaining productive habitats, such as fertile soils and adequate water supplies, supports a wider range of mammal functional traits. Conversely, intensive land use that reduces productivity can lead to declines in functional diversity, with cascading effects on ecosystem services.

Functional Diversity During Past Climate Events

The fossil record provides insights into how mammal functional diversity responds to major environmental disruptions. Research on North American mammal palaeocommunities over the past 66 million years found that all three measures of functional diversity, functional evenness, functional richness, and functional divergence, increased immediately following the extinction of the non-avian dinosaurs. Otherwise, the components of functional diversity were decoupled and responded differently to environmental changes over the last 56 million years (Unique functional diversity during early Cenozoic mammal radiation of North America).

This historical perspective suggests that major disturbances can lead to synchronous responses in functional diversity at local and continental scales. For contemporary conservation, this implies that protecting functional diversity requires attention to multiple components, beyond species richness.

Practical Assessment Steps for Land Managers

Farmers and land managers can assess mammal diversity on their properties using systematic methods that inform management decisions. The following steps provide a practical framework for monitoring and supporting mammal communities.

Step 1: Conduct a Habitat Inventory

Map the different habitat types present on the property, including forests, grasslands, wetlands, croplands, and riparian zones. Note structural features such as fallen logs, rock piles, hedgerows, and water sources. Habitat heterogeneity is a key driver of small mammal diversity, as demonstrated in the Cerrado study where horizontal stratification and geographic location shaped species richness and composition (Habitat Heterogeneity and Geographic Location as Major Drivers of Cerrado Small Mammal Diversity Across Multiple Spatial Scales).

Step 2: Establish Monitoring Transects

Set up transect lines through representative habitats and conduct regular surveys for mammal signs, including tracks, scat, burrows, and feeding damage. Camera traps provide a standardized method for detecting medium to large mammals, as used in the TEAM Network research (Tropical mammal functional diversity increases with productivity but decreases with anthropogenic disturbance). For small mammals, live trapping with appropriate permits and ethical protocols can provide population estimates.

Step 3: Record Observations Systematically

Maintain a field notebook or digital database with dates, locations, species identifications, and environmental conditions. Long-term records are essential for detecting population trends and responses to management actions. The Lithuanian small mammal review demonstrated the value of long-term monitoring, with data from 1975 to 2021 revealing significant shifts in community structure (Small Mammal Diversity Changes in a Baltic Country, 1975-2021: A Review).

Step 4: Identify Limiting Factors

Assess factors that may limit mammal diversity, including habitat fragmentation, pesticide use, hunting pressure, and competition with livestock. The species-area model for habitat fragmentation predicts that connectivity and patch size are critical for maintaining non-volant mammal diversity (Habitat fragmentation amplifies threats from habitat loss to mammal diversity across the world's terrestrial ecoregions).

Step 5: Implement Habitat Enhancements

Based on the assessment, implement targeted enhancements such as planting native vegetation, creating brush piles, maintaining snags, and establishing wildlife corridors. Preserving ground-level structural complexity supports higher mammal occupancy and functional diversity, particularly for carnivorous and social species (Tropical forest mammal occupancy and functional diversity increase with microhabitat surface area).

Step 6: Monitor and Adjust

Repeat monitoring at regular intervals to evaluate the effectiveness of management actions. Adjust practices based on observed responses and changing conditions. Professional consultation may be warranted if monitoring reveals unexpected declines or if management goals are not being met.

Records and Measurements

Systematic record-keeping is essential for understanding mammal diversity patterns and evaluating management effectiveness. The following measurements provide useful data for land managers and researchers.

Species Richness and Composition

Species richness is the number of mammal species present in a defined area. Composition refers to which species are present and their relative abundances. The Cerrado study found rich assemblages of 12 to 21 species per site, characterized by few abundant and several intermediate-level and rare species (Habitat Heterogeneity and Geographic Location as Major Drivers of Cerrado Small Mammal Diversity Across Multiple Spatial Scales). Recording species presence and abundance over time allows managers to detect shifts in community composition.

Functional Diversity Metrics

Functional diversity can be measured using metrics such as functional richness, functional evenness, and functional divergence. These metrics describe the range and distribution of ecological traits in a community. Research on North American mammal palaeocommunities used these three measures to describe how community structure changed over 66 million years (Unique functional diversity during early Cenozoic mammal radiation of North America). For contemporary applications, functional diversity metrics can be calculated from species trait databases combined with local survey data.

Occupancy and Detection Probability

Occupancy models estimate the probability that a species occupies a site, accounting for imperfect detection. The Udzungwa Mountains study used a multispecies occupancy model to relate species occupancies to habitat structure measurements (Tropical forest mammal occupancy and functional diversity increase with microhabitat surface area). Camera trap data can be analyzed using occupancy models to estimate species distributions and habitat relationships.

Habitat Structure Measurements

Measuring habitat structure provides context for interpreting mammal diversity patterns. The Udzungwa study used a head-mounted active remote sensing device to measure ground-level habitat structure, including vegetation and topographic structure (Tropical forest mammal occupancy and functional diversity increase with microhabitat surface area). Simpler measurements, such as percent cover of vegetation layers, density of fallen logs, and soil characteristics, can also be informative.

Common Failure Patterns in Mammal Diversity Monitoring

Several common errors can undermine mammal diversity monitoring efforts. Recognizing these patterns helps managers design more effective programs.

Inadequate Sampling Effort

Mammal surveys that are too brief or too limited in spatial coverage may miss rare or elusive species, leading to underestimates of diversity. The Cerrado study surveyed 45 sites to capture regional diversity patterns, highlighting the importance of adequate spatial replication (Habitat Heterogeneity and Geographic Location as Major Drivers of Cerrado Small Mammal Diversity Across Multiple Spatial Scales). Similarly, long-term monitoring is needed to detect population trends, as demonstrated by the 46-year Lithuanian dataset (Small Mammal Diversity Changes in a Baltic Country, 1975-2021: A Review).

Ignoring Detection Probability

Failing to account for imperfect detection can bias estimates of species occupancy and abundance. Different species have different detection probabilities depending on their behavior, size, and habitat use. Occupancy models that incorporate detection probability provide more reliable estimates than simple presence-absence surveys.

Focusing Only on Species Richness

Species richness alone does not capture the functional or phylogenetic diversity of a community. Two communities with the same number of species may differ greatly in their ecological traits and evolutionary history. Research has shown that functional diversity and phylogenetic diversity respond differently to environmental changes and anthropogenic threats (The decline of mammal functional and evolutionary diversity worldwide).

Overlooking Habitat Connectivity

Monitoring that focuses only on individual sites may miss the importance of connectivity between habitats. Fragmentation effects can be significant even when individual habitat patches appear intact. The species-area model for fragmentation predicts that connectivity and patch size are critical for maintaining mammal diversity (Habitat fragmentation amplifies threats from habitat loss to mammal diversity across the world's terrestrial ecoregions).

Inconsistent Methodology

Changing survey methods or protocols over time can make long-term comparisons unreliable. Standardized methods, such as those used in the TEAM Network camera trap monitoring system, allow for consistent data collection across sites and time periods (Tropical mammal functional diversity increases with productivity but decreases with anthropogenic disturbance).

Limitations and Knowledge Gaps

Understanding the limitations of current knowledge is essential for interpreting mammal diversity data and making informed management decisions.

Sampling Biases in Virus Diversity Research

Research on mammal virus diversity has highlighted significant sampling biases in current knowledge. A comprehensive dataset of 6,571 unique mammal host-virus associations between 1930 and 2018 showed that virus discovery rates are either constant or accelerating, with little evidence of declines toward viral richness asymptotes. Inference of relative viral richness across host species has been unstable over time, particularly in bats, where intensified surveillance since the early 2000s caused a rapid rearrangement of species ranked viral richness (Mammal virus diversity estimates are unstable due to accelerating discovery effort). This finding cautions against overinterpreting patterns in current data.

Geographic and Taxonomic Biases

Mammal diversity research is unevenly distributed across geographic regions and taxonomic groups. Some regions, such as tropical forests and Mediterranean ecosystems, have received more research attention than others. Similarly, certain taxa, such as rodents and bats, are better studied than others. The mammal diversity observation network of sino BON provides an example of coordinated monitoring efforts in China (Overview of the mammal diversity observation network of sino BON).

Remote Sensing Limitations

Remote sensing technologies, including lidar, can predict small mammal diversity but have limitations in detecting ground-level features. Research in Wisconsin used lidar to predict small mammal diversity, demonstrating the potential of this technology for landscape-scale assessments (Lidar Prediction of Small Mammal Diversity in Wisconsin, USA). However, lidar data may not capture fine-scale habitat features that are important for small mammals.

Historical Data Limitations

Historical biodiversity data from art and other sources can provide insights into past mammal distributions and populations. Research has synthesized evidence from prehistoric cave art, historical illustrations, and literary arts to document how artworks can inform our understanding of extinct species, historical population dynamics, and distributional shifts (Art as a source of historical biodiversity data). However, interpreting biodiversity data from art requires careful consideration of artistic conventions and potential biases.

Welfare and Safety Context

Mammal diversity monitoring and management involve ethical and safety considerations that must be addressed.

Ethical Treatment of Animals

Any handling of live mammals requires adherence to ethical guidelines and, in many jurisdictions, permits and institutional approval. Live trapping should minimize stress and injury, with traps checked frequently and appropriate handling techniques used. The American Society of Mammalogists and other professional organizations provide guidelines for the ethical treatment of mammals in research.

Zoonotic Disease Precautions

Mammals can carry zoonotic pathogens that pose risks to human health. Rodents of the genus Apodemus are associated with vector-borne zoonotic pathogens, including certain Borrelia genospecies and Neoehrlichia mikurensis (From reservoirs to ecological integrators: the role of European Apodemus spp. in vector-borne zoonotic pathogens). Researchers and land managers should follow appropriate precautions when handling mammals or working in areas with high mammal densities, including wearing protective gloves and clothing and washing hands thoroughly after field activities.

Livestock Interactions

Wild mammals can interact with livestock in ways that affect animal health and farm productivity. Predators may prey on livestock, while herbivores may compete for forage. Rodents can contaminate feed and transmit diseases to livestock. Understanding the ecology of wild mammals helps farmers design management strategies that minimize negative interactions while maintaining biodiversity.

Professional Escalation Criteria

Certain situations warrant professional consultation or intervention. These include:

• Detection of unusual mortality events or disease outbreaks in wild mammals
• Evidence of threatened or endangered species on the property
• Conflicts between wild mammals and livestock that cannot be resolved through standard management practices
• Signs of significant habitat degradation or fragmentation
• Uncertainty about species identification or legal requirements for management actions

In these cases, consulting with wildlife biologists, veterinarians, or extension specialists can provide guidance on appropriate actions.

Frequently Asked Questions

What are the three main groups of mammals?

The three main groups of mammals are monotremes, marsupials, and placental mammals. Monotremes, such as the platypus and echidna, lay eggs. Marsupials, including kangaroos and opossums, give birth to relatively undeveloped young that continue development in a pouch. Placental mammals, which include humans, whales, and rodents, carry their young through a placenta that provides nutrients during gestation. These reproductive strategies represent major evolutionary divisions within the class Mammalia.

How many mammal species exist worldwide?

The exact number of mammal species is not fixed because new species are continually discovered and taxonomic revisions occur. Estimates typically range from approximately 5,400 to 6,500 recognized species. Research on mammal virus diversity has shown that knowledge of mammal biology continues to expand, with discovery rates for host-virus associations remaining constant or accelerating (Mammal virus diversity estimates are unstable due to accelerating discovery effort). The number of recognized mammal species changes as taxonomic studies refine our understanding of species boundaries.

What is the largest mammal in the world?

The blue whale (Balaenoptera musculus) is the largest mammal and the largest animal to have ever lived. Adult blue whales can exceed 150 tonnes and reach lengths of over 30 meters. Despite their enormous size, blue whales feed primarily on tiny krill, which they filter from the water using baleen plates. Their size allows them to migrate across entire ocean basins and dive to considerable depths in search of prey.

Are bats the only flying mammals?

Bats are the only mammals capable of true powered flight. Their wings are formed from a membrane stretched between elongated finger bones, allowing them to maneuver in the air and pursue flying insects. Other mammals, such as flying squirrels and colugos, can glide but cannot achieve powered flight. These gliding mammals use a membrane between their limbs to slow their descent and travel between trees, but they cannot gain altitude or sustain flight.

How do mammals adapt to aquatic environments?

Aquatic mammals have evolved a range of adaptations for life in water. These

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References and Further Reading

• NCBI Literature Resources. National Center for Biotechnology Information.
• PubMed. National Library of Medicine.
• Small Mammal Diversity Changes in a Baltic Country, 1975-2021: A Review.. Life (Basel, Switzerland), 2022.
• Tropical forest mammal occupancy and functional diversity increase with microhabitat surface area.. Ecology, 2023.
• Diversity begets diversity in mammal species and human cultures.. Scientific reports, 2020.
• Mammal virus diversity estimates are unstable due to accelerating discovery effort.. Biology letters, 2022.
• Unique functional diversity during early Cenozoic mammal radiation of North America.. Proceedings. Biological sciences, 2024.
• Tropical mammal functional diversity increases with productivity but decreases with anthropogenic disturbance.. Proceedings. Biological sciences, 2021.
• The decline of mammal functional and evolutionary diversity worldwide.. Proceedings of the National Academy of Sciences of the United States of America, 2021.
• Mammal functional diversity and habitat heterogeneity: Implications for hominin habitat reconstruction.. Journal of human evolution, 2020.
• A C. elegans-to-Mouse Discovery Framework for Prioritizing Sarcopenia Interventions.. 2026.
• From reservoirs to ecological integrators: the role of European &lt,i&gt,Apodemus&lt,/i&gt, spp. in vector-borne zoonotic pathogens.. 2026.
• Art as a source of historical biodiversity data.. 2026.
• Mammal Diversity of Russian Mountain Regions. Biology Bulletin, 2024.
• Habitat fragmentation amplifies threats from habitat loss to mammal diversity across the world’s terrestrial ecoregions. One Earth, 2021.
• Habitat Heterogeneity and Geographic Location as Major Drivers of Cerrado Small Mammal Diversity Across Multiple Spatial Scales. Frontiers in Ecology and Evolution, 2022.
• Elevation range and contemporary climate determine the taxonomic, functional and phylogenetic diversity of forest mammals. Biodiversity and Conservation, 2023.
• Lidar Prediction of Small Mammal Diversity in Wisconsin, USA. Remote Sensing, 2019.
• Effects of habitat complexity on species diversity of small mammals in pastures and forest interlaced regions. Shengtai Xuebao Acta Ecologica Sinica, 2009.
• Overview of the mammal diversity observation network of sino BON. Biodiversity Science, 2017.

This article is educational and does not replace institutional policy, professional advice, or applicable safety and regulatory requirements.