Are Walnuts Toxic to Cats?
Yes — walnuts are mildly toxic to cats.
PawSafe Check is for general information only and is not veterinary advice. Always contact your veterinarian or a poison control service if you think your pet has been exposed.
Symptoms to watch for
- Vomiting
- Diarrhea
- Reduced appetite
- Tremors or seizures if moldy
Toxic parts
Nuts and hulls
Toxic compound
Fat; molds on old nuts
What to do now
- Remove any plant material from your cat's mouth and keep it out of reach.
- Gently rinse the mouth and offer fresh water.
- Call your vet if symptoms persist, get worse, or your cat is small, young or elderly.
Good to know
English walnuts are high in fat and are hard to digest. Moldy or fallen walnuts can carry toxins that cause tremors and seizures, and black walnuts are more dangerous.
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Frequently asked questions
Can cats eat walnuts?
No. Yes — walnuts are mildly toxic to cats.
Are walnuts toxic to cats?
Yes — walnuts are mildly toxic to cats. English walnuts are high in fat and are hard to digest. Moldy or fallen walnuts can carry toxins that cause tremors and seizures, and black walnuts are more dangerous.
What are the symptoms of walnuts poisoning in cats?
Vomiting. Diarrhea. Reduced appetite. Tremors or seizures if moldy.
What should I do if my cat ate walnuts?
Remove any plant material from your cat's mouth and keep it out of reach. Gently rinse the mouth and offer fresh water. Call your vet if symptoms persist, get worse, or your cat is small, young or elderly.
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