Can Cats Eat Broccoli?

With limitsMild effects expected
Verdict for cats: Caution · Evidence: M · Last verified: 2026-11-01 (seed data — veterinary review pending)

Only in small amounts, prepared the right way. Broccoli is not poisonous to cats, but it has real downsides. It contains isothiocyanates. Follow the limits below and watch for stomach upset.

Why only in moderation

isothiocyanates

Which parts are the problem?

No specific part is singled out by our sources — treat the whole food with the stated caution.

Dose & exposure rules

Same math as dogs at smaller scale

If it must be on the menu: safe preparation

A small steamed floret at most; cats gain nothing from it

Symptoms to watch for

nauseadiarrhea

Hours

What to do now

Monitor

✔ Reviewed against AKC. Veterinary review pending — this page will carry a named, licensed veterinarian's sign-off after review (see team and editorial policy). General information only, not veterinary advice.

FAQ

How much broccoli can a cat eat?

Same math as dogs at smaller scale

What are the signs of broccoli problems in cats?

Watch for: nausea; diarrhea. Hours

What should I do if my cat ate broccoli?

Monitor

Related:

Can dogs eat broccoli?

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