Yes. Plain cucumber is non-toxic to cats and a safe, hydrating treat — it is mostly water with very little sugar. Peel it if the skin is waxed, offer a thin slice or two, and skip pickles, which are salty and often contain onion or garlic.
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Safe — a thin slice as a cool treatFine as a small, plain treat
Can cats eat cucumbers? 🥒
Yes. Plain cucumber is non-toxic to cats and a safe, hydrating treat — it is mostly water with very little sugar. Peel it if the skin is waxed, offer a thin slice or two, and skip pickles, which are salty and often contain onion or garlic.
Source-linked record · Last reviewed July 17, 2026 · Not veterinary advice
Why this answer
Cucumber contains no feline toxin and is almost entirely water, making it one of the lower-risk vegetable treats, with negligible sugar or calories. The only cautions are the waxed or bitter skin, which some cats dislike or find hard to digest, and pickled cucumbers, whose salt, vinegar, and seasonings are not cat-appropriate.
Watch for
Mild loose stool if a cat eats a lot
Stomach upset from waxed skin in a sensitive cat
How much is okay
One or two thin slices or small pieces, a few times a week, fresh and plain.
Serve it safely
Wash and, if the skin is waxed or bitter, peel it before slicing thin.
Serve fresh and plain — no salt, dip, or seasoning.
Never offer pickles, which are salty and may contain onion or garlic.
Sources and evidence notes (3)
Feeding Your Cat
Cornell Feline Health Center, Cornell University College of Veterinary Medicine — Feline nutrition fundamentals: cats are obligate carnivores; complete balanced cat food should be the diet base; treats should stay a small share of daily calories.
Petfoodology
Cummings School of Veterinary Medicine at Tufts University — Board-certified veterinary nutritionist guidance on pet diets, treat limits (about 10% of daily calories), human-food snacks, and species-appropriate feeding for cats and dogs.
People Foods to Avoid Feeding Your Pets
ASPCA Animal Poison Control Center — Multi-species veterinary toxicology list covering alcohol, chocolate, caffeine, citrus, coconut, grapes and raisins, macadamia nuts, milk and dairy, nuts, onions, garlic and chives, raw meat and eggs, salty snacks, xylitol, and yeast dough.
Answer card
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Type what your cat is eyeing — or already stole — and the answer lands right here, without leaving the page.
Remove access. Take the food away and move your cat to another room.
Note the facts. What was it, roughly how much is missing, and when? Keep the packaging.
Call before symptoms. For chocolate, onion, garlic, grapes, raisins, alcohol, or anything sugar-free (xylitol), call a hotline or your veterinarian now — early treatment is easier and cheaper.
Never do this
Do not induce vomiting, feed milk, salt, or oil, or wait overnight to "see how it goes". Signs of chocolate or Allium poisoning can take hours to days to appear.
Go to an emergency vet immediately if
Your cat is collapsing, twitching or seizing, struggling to breathe, drooling heavily, vomiting repeatedly, or wobbly on their feet.
Outside the US? Call your local emergency veterinary clinic — keep the number saved in your phone.
Effective: July 17, 2026
Can Cats Eat It? provides general educational information for cat owners. It is not veterinary, diagnostic, treatment, or emergency advice.
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