Why?
Celery stalks are almost entirely water plus long, stringy fibers that cats don't chew well. Those strings can make swallowing awkward, so it needs to be cut very small or cooked. Celery root (celeriac) is denser and starchier and should be cooked. Either way, it offers nothing essential to a well-fed cat.
How much?
A few very thin slices of stalk with the strings removed, or a teaspoon of cooked, mashed celery root, once in a while. No celery salt, creamy celery dishes or soups.
The risks
- Long strings that can make swallowing difficult
- Pieces that are too big, a choking risk
- Soft stools if your cat eats too much
- Soups and broths made with onion and salt
- Celery salt, which is very salty
Your cat ate some: what now?
A bit of celery is no problem. If your cat swallowed a long, stringy piece, watch it for 24 to 48 hours and call your vet if it coughs, gags or vomits repeatedly. If it was soup or broth with onion, call your vet right away.
Better options
Cucumber and zucchini offer the same crunch without the strings. If your cat likes chewing green stems, offer cat grass.
Common questions
Can cats eat celery leaves?
They aren't known to be toxic in small amounts, but they're bitter and fibrous. A few small, washed pieces now and then are plenty.
Can cats eat celery with peanut butter?
Skip the peanut butter: it's very fatty, often salted, and some brands contain xylitol, which is dangerous for pets. A thin slice of plain celery is the safer way to share.
This information is general and does not replace advice from a veterinarian. If your cat has swallowed something toxic, call your vet or an animal poison control center right away, without waiting for symptoms.