Horse Chestnut / Buckeye
DangerContains aesculin, a neurotoxic glycoside. Nuts, leaves, and bark all toxic.
Quick Answer: Is Horse Chestnut / Buckeye Toxic to Dogs or Cats?
Use this short answer first, then read symptoms and what to do next.
Is Horse Chestnut / Buckeye toxic to dogs?
Yes. Treat Horse Chestnut / Buckeye as an emergency risk for dogs. Call your veterinarian or a pet poison hotline right away after exposure.
Is Horse Chestnut / Buckeye toxic to cats?
Yes. Treat Horse Chestnut / Buckeye as an emergency risk for cats. Call your veterinarian or a pet poison hotline right away after exposure.
Symptoms to watch for
Severe vomiting, diarrhea, depression, muscle twitching, paralysis
What should I do now?
EMERGENCY. Contact vet immediately.
Dogs
Emergency risk
Cats
Emergency risk
Risk level
Danger
Symptoms
Severe vomiting, diarrhea, depression, muscle twitching, paralysis
What to do now
EMERGENCY. Contact vet immediately.
Explore Related Safety Hubs
Use these hub pages for broader dog, cat, cleaner, and emergency planning guidance.
Dog Toxicity Guide
Compare Horse Chestnut / Buckeye with common dog food, plant, medication, and household toxicity risks.
Open hubCat poisoningCat Toxicity Guide
See cat-specific guidance for Horse Chestnut / Buckeye, plants, cleaners, foods, and medication risks.
Open hubEmergency planningVet Cost Hub
Plan for emergency exams, toxin ingestion care, hospitalization, and insurance decisions.
Open hubSymptoms to Watch For
Severe vomiting, diarrhea, depression, muscle twitching, paralysis
What to Do
EMERGENCY. Contact vet immediately.
Plan ahead for emergency vet bills
Poisoning, broken bones, and emergency surgery can get expensive quickly. Compare costs and accident coverage before you need it.
Pet Poisoning Emergency Checklist
A one-page checklist for symptoms, product labels, emergency contacts, and what to bring to the clinic.
Clinical References
Quick Answers
Is Horse Chestnut / Buckeye poisonous to dogs?
Is Horse Chestnut / Buckeye toxic to cats?
What symptoms can Horse Chestnut / Buckeye cause in pets?
What should I do if my pet ate Horse Chestnut / Buckeye?
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