Can cats eat walnuts? Take care — the catch
Quick answer: Not recommended — walnuts is best avoided for cats.
Quick verdict
Caution
Key risk
High in fat, a choking hazard and may carry harmful moulds.
Why
Walnuts are not recommended for cats.
Can cats eat walnuts, and why?
Walnuts are not recommended for cats. High in fat, a choking hazard and may carry harmful moulds.
Cats are obligate carnivores: they must get most of their nutrition from meat and need nutrients such as taurine that only animal products provide. They lack some enzymes for processing plants and carbohydrates, so fruit and veg offer little benefit and can upset their stomach; many cats are also lactose intolerant.
Warning — what to watch for
High in fat, a choking hazard and may carry harmful moulds.
If your cat has eaten walnuts, don’t wait for symptoms — contact your vet immediately, or call the Animal PoisonLine on 01202 509000 (24/7, UK). Signs of a problem can include vomiting, diarrhoea, drooling, lethargy, tremors or loss of appetite.
🚨 Find an emergency vet near youMore foods cats might eat
Feed cats safely
Portion control and slow feeding help when a food needs care:
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Feeding & nutrition guides
Frequently asked questions
Can cats eat walnuts?
Caution. Walnuts are not recommended for cats.
What happens if my cat eats walnuts?
High in fat, a choking hazard and may carry harmful moulds. If your cat has eaten walnuts, contact your vet or the Animal PoisonLine (01202 509000) straight away — don’t wait for symptoms.
Is walnuts poisonous to cats?
Caution. Walnuts are not recommended for cats.
Free printable: safe & toxic foods for cats
walnuts is just one food — get the full one-page checklist of what’s safe, fine in moderation, or dangerous for cats. Vet-sourced, yours to print and keep.
Check walnuts for another pet
Sources
Our verdict on whether cats can eat walnuts draws on established UK and US veterinary and welfare organisations. Individual pets, quantities and preparation vary — always confirm with your own vet.