Can cats eat walnuts?
Ask your vet about your own pet. This page is general information from the sources below.
Walnuts is only for small amounts, or in certain forms, for cats. The ASPCA says walnuts, almonds and pecans are high in fat for pets in general. That can cause vomiting, diarrhea and sometimes pancreatitis. Call a vet if your pet gets sick. The ASPCA lists walnuts with almonds and pecans as nuts whose oil and fat can lead to pancreatitis.
Checked October 29, 2026.
Why
The ASPCA says walnuts, almonds and pecans are high in fat for pets in general. That can cause vomiting, diarrhea and sometimes pancreatitis. Call a vet if your pet gets sick.
Good to know
The ASPCA lists walnuts with almonds and pecans as nuts whose oil and fat can lead to pancreatitis.
Watch for: Walnuts show up in brownies, banana bread and baked goods, which add more sugar and fat.
Already ate it?
If your pet ate a lot, or you are worried, call your vet. Say what was eaten, how much and when, and have your pet's weight ready.
Poison emergency? Call now
ASPCA Animal Poison Control: (888) 426-4435, 24 hours a day, every day. A consultation fee may apply.
Pet Poison Helpline: (855) 764-7661, 24/7. $99 per incident, follow-up calls included.
Or call your vet or the nearest emergency vet.
For the children
"Walnuts is only a tiny treat for cats, and only a grown-up decides how much."
A job: Be the label reader. Before a grown-up shares any food with the cat, check this page, and ask a grown-up if the food is not on it.
This page is general information from the sources below, not veterinary advice. Your own vet knows your cat. Cats differ.
Sources
- ASPCA: People Foods to Avoid Feeding Your Pets (checked October 29, 2026)