Safety verdict
Consulted references classify the plant as toxic or irritating for that pet type.
Pet ingestion lookup
My cat ate American Yew - what should I do?
Taxus canadensis
Potentially toxic
Contact your veterinarian or an animal poison-control resource now, especially if any amount was chewed or swallowed.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Signs to watch for
Tremors, difficulty breathing, vomiting, diarrhea, and potential cardiac arrhythmias.
Escalation note
This plant is considered highly toxic. Ingestion is a medical emergency; contact your veterinarian or an animal poison control center immediately.
What to watch for
Early signs include muscle tremors, drooling, vomiting, and labored or fast breathing. Cats can progress quickly to weakness, dilated pupils, an irregular heart rate, collapse, or sudden death — in some reports with very little warning before cardiac collapse.
Time window
Signs can appear within 30 minutes to a few hours. Cases of collapse within 15 minutes of ingestion have been recorded in monogastric animals. There is no safe observation window.
When to call the vet
Go to an emergency veterinary clinic immediately. Call ASPCA Animal Poison Control at (888) 426-4435 or Pet Poison Helpline at (855) 764-7661 on the way. Do not wait to see whether your cat develops symptoms.
What this means for your cat
Yew is one of the most dangerous plants a cat can chew. Taxine alkaloids in the needles, bark, and seeds disrupt the heart's electrical signals and can cause sudden cardiac death — sometimes without much warning. Treat any nibble as a true emergency, even if your cat looks fine.
Sources: ASPCA, Pet Poison Helpline.
Source references
Poison-control resources
This page summarizes source-bound plant-safety information and is not veterinary advice.