How much spinach for your cat?
Most guides say "a few pieces". Enter your cat's weight and get the actual daily ceiling, worked out from spinach's calories and the 10%-of-daily-calories treat rule vets use.
Assumes a healthy, neutered adult at a stable weight, and that this is their only treat that day. Puppies, pregnant, very active or unwell pets need different amounts — ask your vet.
Why this verdict for cats
A little cooked spinach is fine, but oxalates mean it should be avoided in cats with kidney issues.
Spinach is genuinely nutritious — vitamins A, C, K and iron — and a small amount is fine for most dogs and cats. It just isn't the superfood habit for pets that it is for people, because of its oxalates.
How much is safe?
A small amount of chopped spinach, occasionally — a spoonful mixed into food for a dog, a shred or two for a cat. Lightly steamed is gentler than raw.
What happens if a cat eats too much?
Spinach is high in oxalates, which in large regular amounts can stress the kidneys and contribute to bladder stones in susceptible pets. Pets with kidney disease or a history of urinary stones should skip it altogether.
How to serve it safely
Steam or blanch plain spinach briefly, chop it, and mix a little into food. No oil, salt, garlic or creamed versions.
🍽️ Feeding it safely?
Frequently asked questions
Can pets with kidney or bladder issues eat spinach?
Best avoided — the oxalates in spinach are exactly what those pets don't need. Ask your vet for greener-lit veggies like green beans.
Raw or cooked spinach?
Lightly cooked is better — steaming softens it, reduces oxalate impact and makes it easier to digest.
How often can I give spinach?
Think garnish, not habit: small amounts, occasionally, mixed into normal food.
More vegetables for cats
By the CanMyPet Editorial Team · Reviewed against ASPCA Animal Poison Control, the American Kennel Club (AKC) and Pet Poison Helpline · Last updated July 31, 2026.
Sources
- ASPCA — People Foods to Avoid Feeding Your Pets
- American Kennel Club — Dog Nutrition
- Pet Poison Helpline — Poison List