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Can Cats Eat Crab?

Only with caution

Please read the risks below before offering any.

Illustration of crab

Is crab safe for cats?

Crab is a shellfish with sweet white meat inside a hard shell. Plain, cooked crab meat is okay in tiny amounts, but the shell is sharp, and shellfish can cause allergies and stomach upset. Cats are obligate carnivores, so they get what they need from meat and never need crab. If you offer it at all, treat it as a rare, tiny extra.

How to reduce the risks if you offer crab

What to avoid

How much crab can my cat have?

If you decide to offer crab despite the cautions above, give just one tiny taste and check with your vet first, especially if your cat has any health condition. When in doubt, skip it.

Signs your cat may be having a problem

Watch for vomiting, diarrhea, drooling, pawing at the mouth, loss of appetite, tiredness, a swollen or painful belly, or trouble breathing. Contact your vet right away if you see these signs, or if your cat has eaten any of the parts listed above.

Emergency? Call your vet or an animal poison hotline straight away: ASPCA Animal Poison Control (888) 426-4435 or Pet Poison Helpline (855) 764-7661 (US numbers, a consultation fee may apply).

Frequently asked questions

Can kittens eat crab?

Because crab needs extra caution for adult cats, it is best to avoid it for kittens.

What if my cat ate too much crab?

The most common result is an upset stomach with vomiting or diarrhea. Offer water, skip further treats, and call your vet if symptoms are severe or last more than a day, or if your cat ate any of the parts listed under "What to avoid".

Should crab be a regular part of my cat's diet?

No. We recommend not making crab a regular part of your cat's diet.

More questions cat owners ask

Wondering about the other pet in your home? Can Dogs Eat Crab?

Last updated September 2026. This page is general information and is not a substitute for advice from your veterinarian. Every cat is different, so check with your vet before adding new foods, especially if your cat has health problems, is pregnant, or is very young or old.