How much broccoli for your cat?
Most guides say "a few pieces". Enter your cat's weight and get the actual daily ceiling, worked out from broccoli'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 plain cooked broccoli is non-toxic, but too much causes digestive upset in cats.
Broccoli is fine in small amounts — it's low in calories and packed with fiber and vitamin C. But it comes with an asterisk: the florets contain a compound that can irritate a pet's gut if they eat too much.
How much is safe?
Think of broccoli as an occasional nibble, not a regular side. A few small, plain pieces are fine for most dogs, and a tiny piece is plenty for a cat. The florets contain isothiocyanates, which in large amounts can cause stomach irritation — so keep broccoli to less than about 10% of daily food.
What happens if a cat eats too much?
Large amounts can cause gas, an upset stomach, or more significant gastric irritation. Whole stalks can also be a choking hazard, so always cut broccoli into small pieces.
How to serve it safely
Serve broccoli plain — raw or lightly steamed — cut into bite-size pieces with no oil, butter, salt, or seasoning. Steaming makes it a little easier to digest. Skip anything cooked with garlic or onion.
🍽️ Feeding it safely?
Frequently asked questions
How much broccoli is safe?
Small amounts only — keep it under 10% of daily food, as the florets can irritate the gut in quantity.
Raw or cooked broccoli?
Both are fine in small amounts; lightly steamed is gentler on digestion. Always serve it plain.
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