Why
Cucumbers are mostly water and contain very few calories, which makes them a good snack for overweight dogs. They also provide small amounts of vitamin K and other nutrients.
Pickles are different. They are high in salt and are often flavored with garlic, onion and spices.
What to watch out for
- Choking if pieces are too large
- Gas or loose stools from eating a lot
- Pickles and seasoned cucumber salads
How to serve it
- Wash and slice into rounds or sticks suited to your dog's size.
- Serve plain, fresh or chilled.
How much?
A dog can have several slices of cucumber; it is one of the lowest-calorie treats available.
Pickles, tzatziki and cucumber salads
Plain cucumber is one of the safest treats around. Once it becomes part of a dish, that changes.
- Pickles: high in salt, and brine often includes garlic, dill seed and spices. One slice is unlikely to cause harm to a large dog, but a jar's worth of salt is a real problem.
- Tzatziki and raita: made with garlic, and sometimes onion, plus yogurt that can upset a dog's stomach.
- Cucumber salads: usually dressed with vinegar, salt, sugar, onion or sesame oil.
- Cucumber sandwiches: butter, cream cheese and bread add fat and calories.
A low-calorie treat for dogs on a diet
Cucumber is useful when a dog needs to lose weight but still expects a treat. Swapping some biscuits for cucumber slices cuts calories without cutting out the reward.
It works for training too. Dice it into small cubes and keep them in the fridge. Not every dog finds cucumber exciting, so use it for easy, familiar cues and save higher-value treats for harder work.
For long-term weight loss, ask your vet to calculate how many calories your dog should eat each day. Treats alone rarely solve the problem. Cucumber has almost no protein or fat, so it can replace a biscuit but never part of a meal.
Should you peel cucumber or remove the seeds?
There is no need to peel cucumber or remove the seeds before giving it to a dog. The skin and the soft seeds are safe. Wash the cucumber well, since store-bought ones are sometimes waxed.
Shape matters more than peel. A small dog can choke on a thick round, and a large dog may try to swallow a whole stick. Cut thin slices or small cubes for small dogs, and long sticks they have to chew for bigger ones.
Chilled cucumber straight from the fridge is a pleasant snack in warm weather.
Common questions
Is cucumber good for dogs?
Yes, as an occasional treat. Cucumbers are mostly water and contain very few calories, which makes them a good snack for overweight dogs. They also provide small amounts of vitamin K and other nutrients.
Is cucumber bad for dogs?
Not in sensible amounts. The main thing to watch: choking if pieces are too large.
Are dogs allowed to have cucumber?
Yes. Wash and slice into rounds or sticks suited to your dog's size.
Sources
Topic references
General care and safety
If your dog has eaten something toxic, contact your veterinarian or an emergency animal hospital right away. Do not wait for symptoms. In the US you can also call the ASPCA Animal Poison Control Center at (888) 426-4435 or the Pet Poison Helpline at (855) 764-7661 (fees may apply).