# Can Cats Have Lemons and Limes? Citrus Toxicity Can cats have lemons? No. Lemons and limes are toxic to cats, and all parts of the plant, including the peel, leaves, stems, and juice, can cause problems [1][2]. The fruit itself is sometimes listed as edible for pets, but the peel, pith, and plant material carry the toxic principles that make citrus a poor choice for your cat [1][2]. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - Lemons and limes are toxic to cats because of essential oils and psoralens in the peel, leaves, and stems [1][2]. - The most common signs of citrus poisoning are vomiting, diarrhea, and depression, with possible skin irritation after contact [1][2]. - Citrus juice is acidic and can upset your cat's stomach even in small amounts, so do not offer it. - If your cat licked or ate a lemon, lime, or citrus product, call your veterinarian or a pet poison hotline right away. - Never use citrus essential oils, peels, or sprays around your cat, since cats are very sensitive to plant oils. ## Can Cats Have Lemons and Limes? The Verdict The short answer is no. Citrus fruits are not a safe treat for cats, and there is no reason to feed them. The ASPCA lists both lemon (Citrus limonia) and lime (Citrus aurantifolia) as toxic to cats, dogs, and horses [1][2]. The toxic principles are essential oils and psoralens, which are concentrated in the peel, leaves, and stems [1][2]. The fruit flesh is sometimes described as edible, but the skins and plant material can cause real problems [1][2]. This matters because cats are curious. A cat may bat at a lime wedge on a cutting board, chew a lemon leaf from a houseplant, or lick a spill of lime juice. Even a small taste can lead to an upset stomach. Citrus is also common in household cleaners, candles, and essential oil diffusers, and those sources can be just as risky as the fruit itself. If you are checking which plants around your home are safe, it helps to know that citrus is far from the only plant concern for cats. You can read more about common household risks in [What Plants Can Be Toxic To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/what-plants-can-be-toxic-to-cats) and [Plants Toxic To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/plants-toxic-to-cats). ## What Is in Lemons and Limes? Lemons and limes contain several compounds that matter for cats. The main ones are essential oils (including limonene) and psoralens, which are the toxic principles identified for both fruits [1][2]. Limonene is a major allergen in the citrus family, and it is one of the molecules that can trigger reactions in sensitive animals [3]. Psoralens and related coumarins are also responsible for phototoxic reactions, meaning they can make skin more sensitive to sunlight [3]. Citric acid gives lemons and limes their sour taste. It is not the main toxic principle, but it can irritate a cat's mouth and stomach. Cats are obligate carnivores, so they have no nutritional need for fruit. There is no vitamin or nutrient in a lemon or lime that your cat cannot get from a complete and balanced cat food. ## Is There Any Benefit of Citrus for Cats? There is no nutritional benefit of lemons or limes for cats. Some citrus extracts and oils have been studied for other purposes, but those are not the same as feeding your cat a lemon. For example, a plant-based supplement containing lemon balm and other extracts was evaluated for flea control in cats, and the product was well tolerated in that specific formulation [4]. That does not mean lemon or lime fruit is safe or useful for your cat. Lime oil has also been studied as an ingredient in medicated shampoos for skin conditions in cats, and one study found no cutaneous or systemic adverse effects when lime essential oil shampoo was used as directed alongside oral treatment [5]. Again, this is a formulated product used under veterinary guidance, not a reason to put lime juice or peel on your cat. The dose, dilution, and delivery matter enormously. ## Risks of Lemons and Limes for Cats ### Toxicity From Essential Oils and Psoralens The essential oils and psoralens in lemon and lime are the core problem [1][2]. Cats have a limited ability to metabolize many plant oils and compounds, which makes them more vulnerable than dogs to certain toxins. When a cat eats peel, leaves, or stems, the result can be vomiting, diarrhea, and depression [1][2]. Skin contact with the plant material can also cause dermatitis, meaning red, irritated, or inflamed skin [1][2]. ### Skin and Sun Reactions Lime is well known for contact dermatitis and phototoxic reactions in people, driven by coumarins and furocoumarins [3]. The same molecules can irritate a cat's skin. If juice or oil gets on your cat's coat and your cat then sits in a sunny window, the skin can become red and sore. Cats groom themselves, so anything on the fur often ends up in the mouth. ### Choking and Blockage Lemon and lime peels are tough and can be a choking hazard for a cat. Seeds can also be a problem if swallowed. A cat's throat is small, and a piece of peel or a whole wedge can lodge in the mouth or throat. This is a mechanical risk on top of the chemical toxicity. ### Additives in Citrus Products Many lemon and lime products are not plain fruit. Lemonade, limeade, margarita mix, and flavored sparkling water often contain sugar, artificial sweeteners, or other additives. Some sugar-free products contain xylitol, which is highly toxic to dogs and should never be given to cats either. Other risky additives include salt, garlic, and onion, all of which can harm cats. Always read labels, and assume any human citrus drink is off limits. ### Essential Oils and Cleaners Citrus essential oils are concentrated and can be dangerous for cats. Diffusers, room sprays, and cleaning products with lemon or lime oil can expose your cat through the air, the paws, and grooming. Because cats groom their coats, anything that lands on the fur can be swallowed. Keep your cat out of rooms where you are using strong citrus cleaners, and let surfaces dry completely before your cat returns. ## How to Offer Citrus Safely (Spoiler: You Should Not) There is no safe way to feed your cat lemons or limes as a treat. The peel, leaves, and stems are the most toxic parts, and the juice can still cause stomach upset [1][2]. If you want to give your cat a special treat, choose a cat-safe option instead. | Form | Safe for Cats? | Notes | |---|---|---| | Lemon or lime fruit flesh | No | Fruit is listed as edible, but skins and plant material cause problems, and there is no benefit [1][2] | | Peel, pith, leaves, stems | No | Contains essential oils and psoralens, the toxic principles [1][2] | | Juice or juice concentrate | No | Acidic and can cause vomiting or diarrhea | | Lemonade, limeade, margarita mix | No | Often contains sugar, xylitol, salt, or other additives | | Citrus essential oil | No | Concentrated oils are risky for cats through contact and grooming | | Lime sulfur dip (veterinary) | Only under veterinary direction | Incorrect dilution caused severe toxicity in two cats [6] | | Lime essential oil shampoo (veterinary) | Only under veterinary direction | Studied as a medicated shampoo, not a home remedy [5] | If your veterinarian has prescribed a lime sulfur dip for a skin condition, follow the dilution instructions exactly. Two cats developed severe systemic toxicity, including hypotension, bradycardia, hypothermia, chemical burns, acid-base disturbances, and azotemia, after a 30% solution was used instead of the recommended 3% solution [6]. That is a 10-fold overdose, and both cats needed hospitalization [6]. Never mix or apply these products on your own. ## What to Do If Your Cat Ate Lemon or Lime Act quickly. Call your veterinarian, an emergency clinic, or a pet poison hotline. Have the following information ready: what your cat ate, how much, when it happened, and your cat's weight. Do not wait for symptoms to appear. If the exposure was to the skin, wash the area with mild soap and lukewarm water, then rinse well. Do not use harsh scrubbing or human shampoos. If your cat is having trouble breathing, collapsing, or having seizures, go to an emergency clinic immediately. Do not induce vomiting unless a veterinarian tells you to. Some substances cause more damage coming back up, and the wrong move can make things worse. Your veterinarian will decide whether decontamination, fluids, or other treatment is needed based on your cat's weight and health. ## Safer Alternatives to Citrus Treats Cats do not need fruit or citrus in their diet. If you want to give a treat, choose something made for cats. A few small pieces of plain cooked chicken, a commercial cat treat, or a spoonful of wet food are all better options. Some cats enjoy a bit of cooked pumpkin or a lick of plain, unsweetened yogurt, but check with your veterinarian first, since individual cats have different needs. For hydration, fresh water is best. If your cat likes running water, a pet fountain can encourage drinking. Never add lemon or lime to water as a flavoring. If you are looking for ways to keep your cat safe from plants in general, the same caution applies to many common houseplants and garden plants. You can review [What Plants And Flowers Are Toxic To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/what-plants-and-flowers-are-toxic-to-cats) and [Are Lilies Toxic to Cats?](/knowledge/veterinary-medicine/toxicology-and-food-safety/are-lilies-toxic-to-cats) for more guidance. ## Limitations and When to Contact a Veterinarian This article gives general information, but every cat is different. Your cat's age, weight, health conditions, and the amount and form of citrus eaten all affect the outcome. Only a veterinarian who examines your cat can give you specific advice. Contact your veterinarian the same day if your cat ate lemon or lime peel, leaves, stems, or juice, even if your cat seems fine. Signs like vomiting, diarrhea, and depression can appear hours later [1][2]. Go to an emergency clinic now if your cat is vomiting repeatedly, has bloody diarrhea, is lethargic or unresponsive, is drooling heavily, is having trouble breathing, is having seizures, or has collapsed. These are signs that need immediate care. Schedule a routine visit if your cat had minor skin contact, has redness or itching on the paws or chin, or if you have questions about citrus products in your home. Bring the product label or a photo of the plant if you can. ## Frequently Asked Questions ### Can cats have limes? No, cats should not have limes. Limes contain the same toxic principles as lemons, and the peel, leaves, and stems can cause vomiting, diarrhea, and depression [2]. Even the juice can irritate your cat's mouth and stomach. ### Can cats have lime juice? No, lime juice is not safe for cats. It is acidic and can cause stomach upset, and it may carry small amounts of the oils found in the peel. There is no health benefit, so it is best to keep all citrus juice away from your cat. ### Can cats eat lime or lemon? No, cats should not eat lime or lemon. The fruit flesh is sometimes listed as edible, but the skins and plant material cause problems, and cats have no nutritional need for fruit [1][2]. Offer a cat-safe treat instead. ### What happens if a cat licks a lemon? A small lick may cause drooling, mouth irritation, or an upset stomach. Watch for vomiting, diarrhea, or lethargy, and call your veterinarian if any signs appear [1][2]. If your cat ate peel, leaves, or a large amount, seek care right away. ### Are lemon and lime essential oils safe around cats? No, citrus essential oils are not safe around cats. They are concentrated sources of the same compounds that make the plant toxic, and cats can absorb them through the skin or by grooming their fur. Keep diffusers, sprays, and cleaners with citrus oil out of your cat's space. ## Related Articles - [What Plants Can Be Toxic To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/what-plants-can-be-toxic-to-cats) - [Plants Toxic To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/plants-toxic-to-cats) - [What Plants And Flowers Are Toxic To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/what-plants-and-flowers-are-toxic-to-cats) - [Are Lilies Toxic to Cats?](/knowledge/veterinary-medicine/toxicology-and-food-safety/are-lilies-toxic-to-cats) - [What Kind Of Plants Are Harmful To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/what-kind-of-plants-are-harmful-to-cats) - [Can Cats Eat Tuna? Mercury Poisoning & Malnutrition Risks](/knowledge/veterinary-medicine/toxicology-food-safety/can-cats-eat-tuna-mercury-poisoning-malnutrition-risks) - [Can Cats Eat Mandarins or Oranges? Citrus Safety](/knowledge/veterinary-medicine/toxicology-and-food-safety/can-cats-eat-mandarins) - [Can Cats Eat Tangerines or Oranges? Citrus Safety](/knowledge/veterinary-medicine/toxicology-and-food-safety/can-cats-eat-tangerines-oranges) - [What Fruits Are Toxic to Cats? Safe and Unsafe List](/knowledge/veterinary-medicine/toxicology-and-food-safety/fruits-toxic-to-cats) ## References 1. [Toxic and Non-toxic Plants: Lemon](https://www.aspca.org/pet-care/aspca-poison-control/toxic-and-non-toxic-plants/lemon). ASPCA Animal Poison Control Center. 2. [Toxic and Non-toxic Plants: Lime](https://www.aspca.org/pet-care/aspca-poison-control/toxic-and-non-toxic-plants/lime). ASPCA Animal Poison Control Center. 3. [A spotlight on lime: a review about adverse reactions and clinical manifestations due to Citrus aurantiifolia](https://pubmed.ncbi.nlm.nih.gov/34303384/). Clinical and molecular allergy : CMA, 2021. 4. [A Dietary Plant Extract Formulation Helps Reduce Flea Populations in Cats: A Double-Blind Randomized Study](https://pubmed.ncbi.nlm.nih.gov/37259343/). Pharmaceuticals (Basel, Switzerland), 2023. 5. [Comparative Study of the Efficacy of Lime Essential Oil Shampoo Versus 2% Miconazole/Chlorhexidine Combination Shampoo for the Treatment of Dermatophytosis in Client-Owned Cats](https://pubmed.ncbi.nlm.nih.gov/41600708/). Veterinary sciences, 2026. 6. [Systemic lime sulfur toxicosis secondary to dermal exposure in two cats](https://pubmed.ncbi.nlm.nih.gov/32077228/). Journal of veterinary emergency and critical care (San Antonio, Tex. : 2001), 2020. ## Further Reading - [ASPCA Animal Poison Control Center](https://www.aspca.org/pet-care/animal-poison-control) - [ASPCA: People Foods to Avoid Feeding Your Pets](https://www.aspca.org/pet-care/aspca-poison-control/people-foods-avoid-feeding-your-pets) - [U.S. Food and Drug Administration: Potentially Dangerous Items for Your Pet](https://www.fda.gov/animal-veterinary/animal-health-literacy/potentially-dangerous-items-your-pet)