Is Hicks Yew Toxic to Dogs? Deadly Plant Warning

Name: Is Hicks Yew Toxic to Dogs? Deadly Plant Warning
Creator: Dr. Zubair Khalid

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-10-03

Is Hicks yew toxic to dogs? Yes. Hicks yew is highly toxic to dogs, and eating even a small amount of the plant can cause sudden death from acute heart failure [1][2]. This is one of the few garden plants where minutes matter, so if you think your dog chewed or swallowed any part of it, treat it as an emergency.

This article is educational and is not a substitute for veterinary diagnosis or treatment.

Quick Answer

Hicks yew (a cultivar of Taxus yew) is toxic to dogs, cats, and horses, and all parts of the plant except the fleshy red aril around the seed contain taxine compounds [3][1][2].
The most feared outcome is sudden death from acute cardiac failure, sometimes with few or no warning signs [1][2].
Early signs in dogs can include tremors, trouble breathing, vomiting, and seizures [3][2].
Call your veterinarian, the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661 immediately. Do not wait for symptoms.
Do not induce vomiting unless a veterinarian tells you to.

Is Hicks Yew Toxic to Dogs?

Yes. Hicks yew belongs to the genus Taxus, and yews as a group are listed as toxic to dogs, cats, and horses by the ASPCA Animal Poison Control Center [1]. The toxic principles are taxine A and taxine B, along with a volatile oil [3][2]. Hicks yew is a cultivated variety of yew, so it carries the same toxic principle as the wild and ornamental yews described in veterinary toxicology references [1][2].

This matters because yew is common in American yards. It shows up as hedges, foundation plantings, and topiary. Dogs that spend time in the yard can reach low branches, dropped clippings, and fallen seeds. Clippings are a special risk because they often land within reach and stay green and tempting.

Which Parts of the Plant Are Toxic?

The whole plant is considered toxic except for the fleshy red covering (the aril) around the seed [3][2]. That means:

Leaves and needles
Stems and bark
Roots
Seeds (the aril itself is the exception, but the seed inside is toxic)

Dried yew is still a problem. Plant poisoning references note that toxic plant material does not become safe just because it is wilted or dried, and clippings in a yard or compost pile can still poison a dog. Do not assume that brown, dried yew is harmless.

Are Yew Berries and Seeds Dangerous?

The red aril is the one part that is not considered toxic, but the seed inside it is [3][2]. A dog that eats berries is still eating seeds. Because the toxic dose is small and the outcome can be fatal, any berry ingestion is worth a call to poison control or your veterinarian.

Hicks Yew Toxic Principle: What Taxine Does in the Body

Taxine A and taxine B are the main toxic principles in yew, along with a volatile oil [3][2]. Taxines are cardiotoxic, which means they disrupt the electrical and mechanical function of the heart. In dogs, this can show up as an abnormal heart rhythm, poor pumping, and eventually acute heart failure [1][2].

The speed is the scary part. Yew poisoning in dogs is described as causing sudden death from acute cardiac failure, and early signs can be brief or easy to miss [1][2]. Some dogs show tremors, breathing difficulty, vomiting, or seizures before collapse, but others do not give you much warning [3][2].

There is no antidote that reverses taxine poisoning. Veterinary treatment is supportive and focused on stabilizing the heart, controlling seizures, and removing plant material from the gut when it is safe to do so.

Hicks Yew Dog Symptoms and Timeline

Signs can appear quickly, often within minutes to a few hours of ingestion. The exact timeline varies with how much plant was eaten, the size of the dog, and how much was chewed versus swallowed.

Early Signs to Watch For

Vomiting
Tremors or muscle twitching
Trouble breathing or rapid breathing
Weakness, wobbling, or collapse
Seizures [3][2]

Emergency Signs

Sudden collapse
Irregular or very slow heartbeat
Blue or pale gums
Loss of consciousness
Sudden death [1][2]

If you see any of these, go to a veterinary emergency hospital now. Do not spend time searching for more information online.

How Fast Can Yew Poisoning Kill a Dog?

Yew poisoning can cause sudden death from acute cardiac failure, and this can happen before you have time to reach a clinic [1][2]. That is why the advice is always the same: call for help the moment you suspect ingestion, even if your dog looks completely normal.

What to Do Right Now If Your Dog Ate Hicks Yew

Move your dog away from the plant and remove any plant material from the mouth if you can do it safely without being bitten.
Call your veterinarian, the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661 right away [3][1].
Save a sample of the plant or a photo of it, plus any vomit, so the veterinary team can confirm what was eaten.
Do not induce vomiting unless a veterinarian tells you to. With a heart-toxic plant, making your dog vomit at home can be dangerous.
Do not give food, milk, oil, or home remedies. Do not wait to see if symptoms start.
Drive to the nearest emergency veterinary hospital if your dog collapses, has a seizure, or has trouble breathing.

If you are not sure whether the plant in your yard is yew, treat it as yew until someone identifies it. You can also read more about plants poisonous to dogs and what to do when your dog ate a toxic plant.

Veterinary Treatment for Yew Poisoning in Dogs

Treatment depends on how quickly your dog is seen and how stable the heart is. Your veterinarian will calculate any medication doses from your dog's weight and health status, so no home dosing is ever appropriate.

Stabilization

The first priority is the heart and breathing. Your dog may receive intravenous fluids, oxygen, and medications to support blood pressure and heart rhythm. Seizures are controlled with anticonvulsant medication chosen by the veterinarian.

Decontamination

If your dog was seen very soon after eating yew and is stable, the veterinarian may induce vomiting and give activated charcoal to bind remaining plant material in the gut. This is a clinical decision, not something to attempt at home.

Monitoring

Because taxines affect the heart, your dog will likely need continuous heart monitoring (ECG), repeated blood work, and close observation. Some dogs need intensive care for hours to days.

What About the Cost?

Costs vary widely by region, hospital, and how long your dog needs intensive care. Ask the hospital for an estimate early so you can make decisions with clear information.

Outlook After Yew Ingestion

The outlook depends on how much was eaten and how fast treatment starts. Dogs that receive early veterinary care and remain stable can recover, but yew poisoning is one of the plant toxicities most likely to cause sudden death from acute cardiac failure [1][2]. Dogs that survive the first day or two generally have a better chance, but heart rhythm problems can persist, so follow-up care matters.

If your dog does not survive, please know that this plant kills fast and often without warning. Many owners never see the ingestion happen.

Preventing Hicks Yew Poisoning

Prevention is the whole game with yew, because treatment cannot undo the toxin.

Identify every shrub in your yard. If you are not sure, ask a nursery or your local extension office to identify it.
Remove yew from areas your dog can reach, or fence it off completely.
Rake and dispose of fallen needles, seeds, and clippings immediately. Do not leave them in the yard or in an open compost pile.
Supervise your dog outdoors, especially after pruning or landscaping work.
Warn houseguests and dog walkers about the plant.
If you are planting new landscaping, choose pet-safe options. You can browse plants that aren't toxic to cats and dogs before you buy.

Yew is not the only plant that can hurt a dog. Common ornamental plants in the heath family, such as rhododendrons and pieris, contain grayanotoxins and have caused poisoning in companion animals including dogs [4]. Indoor plants are a real risk too, and plant poisoning in pets kept indoors is well documented [5]. Garden and house plants are among the most common causes of plant poisoning in dogs and cats worldwide [6].

If your dog eats plants often, it is worth reviewing what is safe in the food bowl as well. Some human foods are dangerous for dogs, including certain vegetables and fruits. See what vegetables are not safe for dogs to eat and fruits and vegetables not safe for dogs for details.

Limitations and When to Contact a Veterinarian

This article cannot tell you whether your specific dog will be fine. Individual cases need a veterinarian who can examine your dog, run an ECG, and monitor the heart.

Call or go in the same day if:

You saw your dog chew or swallow any part of a yew plant.
You found chewed branches, needles, or seeds near your dog.
Your dog vomited after being near the plant.

Go to an emergency hospital now if:

Your dog collapses or cannot stand.
Your dog has a seizure.
Your dog is breathing fast, hard, or with the mouth open.
Your dog's gums look pale, white, or blue.
Your dog is unresponsive or limp.

Schedule a routine visit if:

You are unsure whether a plant in your yard is yew and want help identifying it.
You want a safe landscaping plan for a dog that eats plants.
Your dog has a history of eating plants and you want prevention guidance.

Frequently Asked Questions

How much Hicks yew does it take to kill a dog?

There is no safe amount, and veterinary references do not give a specific dog dose for yew. Because sudden death from acute cardiac failure is a known outcome, any confirmed ingestion should be treated as an emergency [1][2].

Can a dog survive yew poisoning?

Yes, some dogs survive with fast veterinary care. Survival depends on how much was eaten and how quickly the heart was supported. Dogs that get to a clinic early have the best chance.

Are yew berries safe for dogs if the red part is not toxic?

No. The red aril is the only part not considered toxic, but the seed inside it is toxic [3][2]. A dog eating berries is still swallowing seeds, so call poison control or your veterinarian.

Does dried or dead yew still poison dogs?

Yes, dried plant material can still be toxic, and clippings and dried foliage remain a risk. Never assume wilted or brown yew is safe to leave in the yard.

What plants can I use instead of yew?

Choose plants listed as non-toxic for dogs and cats, and confirm the exact species before planting. A good starting point is a list of plants that aren't toxic to cats and dogs. If you are unsure, ask your veterinarian or a nursery professional to verify the plant.

References

Toxic and Non-toxic Plants: Yew. ASPCA Animal Poison Control Center.
Toxic and Non-toxic Plants: Western Yew. ASPCA Animal Poison Control Center.
Toxic and Non-toxic Plants: American Yew. ASPCA Animal Poison Control Center.
Grayanotoxin poisoning in animals following the ingestion of Ericaceae plants. Veterinary journal (London, England : 1997), 2026.
Indoor Companion Animal Poisoning by Plants in Europe. Frontiers in veterinary science, 2020.
Potential plant poisonings in dogs and cats in southern Africa. Journal of the South African Veterinary Association, 2009.