Vegetables · updated 2026-09-12
Can dogs eat cucumber?
Yes — crunchy, hydrating and almost calorie-free.
Why
Cucumber is about 96% water and a great treat for dogs who need to lose weight. Cut it up: whole chunks can be gulped and choke a greedy eater.
How to serve it
Wash, slice into coins or sticks. Peel if the skin is waxed.
If they eat too much
Loose stools if a dog eats a whole cucumber.
How much cucumber for my dog?
A daily maximum for a healthy adult dog, kept inside the 10% treat rule. Enter body weight.
Up to 45 g a day — roughly 3 tablespoons (a small handful) · washed, sliced.
Treats of all kinds should stay under about 10% of daily calories. Puppies, kittens, seniors and pets with a medical condition: ask your vet first.
And for cats?
Safe. Yes, a slice — many cats like the coolness. Can cats eat cucumber? →
Related foods for dogs
See the whole list: Can dogs eat…? · printable fridge chart
This guide is general information for healthy adult dogs, based on published veterinary guidance (ASPCA, Pet Poison Helpline, AKC, VCA). It is not a substitute for advice from your own vet, who knows your dog's weight, age and medical history. If you are unsure, ask them before sharing any human food.