Nuts & seeds · updated 2026-09-12
Can cats eat walnuts?
No.
Why
Same mould and fat risks; no benefit to cats.
What to do instead
Skip.
Symptoms to watch for
Vomiting, tremors.
If your cat has eaten walnuts, don't wait for symptoms.
Call your vet, or in the US the ASPCA Animal Poison Control Center (888-426-4435) or Pet Poison Helpline (855-764-7661), 24 hours a day. Have the amount, the time and any packaging ready.
And for dogs?
Avoid. No — mould toxins and blockage risk. Can dogs eat walnuts? →
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This guide is general information for healthy adult cats, based on published veterinary guidance (ASPCA, Pet Poison Helpline, AKC, VCA). It is not a substitute for advice from your own vet, who knows your cat's weight, age and medical history. If you are unsure, ask them before sharing any human food.