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Can Dogs Eat Cucumbers? Vet Approved Safety Facts & FAQ

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By Nicole Cosgrove

Can Dog Eat cucumber

Vet approved

Dr. Maja Platisa Photo

Reviewed & Fact-Checked By

Dr. Maja Platisa

In-House Veterinarian, DVM MRCVS

The information is current and up-to-date in accordance with the latest veterinarian research.

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Dogs are omnivores, so they’re happy to eat just about anything, whether it’s actually good for them or not. Some foods aren’t the best for dogs because they create gastrointestinal problems. Some foods, like onions, are actually poisonous to dogs. But can dogs eat cucumbers? The short answer is yes!

Cucumbers are a nutritious snack option that most dogs enjoy eating, and they are safe when offered in moderation and sliced up. They’re full of water, vitamins, and minerals, and can be a refreshing snack in warm weather. A whole cup of sliced cucumber pieces (or about two thirds of a regular cucumber) only has around 18 calories, so you don’t have to worry about your dog putting on any extra weight. Here’s everything you need to know about feeding your dog cucumbers.

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Before changing your dog’s diet or introducing new ingredients or supplements that they haven’t eaten before, especially when it comes to human food, make sure to consult your veterinarian first. Every dog is different and requires an individual approach to nutrition, depending on their age, health, level of activity, and medical history. Guidelines offered in our article have been fact-checked and approved by a veterinarian but should be used as a mere guide on food safety, rather than an individual nutrition plan.

Nutrient Benefits of Feeding Dogs Cucumbers

Cucumbers are a good source of vitamin K, vitamin C, magnesium, and potassium.1  All of these and many more nutrients are required for dogs to have normal digestive and immune function and overall healthy lives. Dogs will get all of these valuable nutrients from their complete and balanced diet, and you simply cannot rely on cucumbers to provide a significant source of these minerals and vitamins. The amount of cucumber dogs can safely eat is too small for them to actually reap many benefits. Still, this can be a small occasional treat with some bonus healthy ingredients.

Cucumbers are also high in fiber, which can support digestive system health. Thanks to the low-calorie count of cucumbers,  dogs that are overweight can safely consume them as healthy occasional treats.

Replacing high-caloric treats with low-calorie cucumbers may help your dog maintain normal weight without sacrificing the rewards they are used to receiving.

Cucumbers are among the many non-starchy veggies that can help keep your blood sugar levels stabilized, although more research is needed into these benefits and whether they could actually apply to dogs.

dog eating cucumber
Image: Aleksey Boyko, Shutterstock

Health Hazards to Worry About

While cucumbers are perfectly safe to feed to dogs in small amounts, there are a couple of hazards to be aware of. The first possible problem is digestion issues. If a dog eats too much cucumber at once, digestion can become uncomfortable, with signs of excess gas, vomiting, diarrhea, lethargy, and discomfort. Contact your vet for advice as some dogs may need treatment. So, it’s best not to feed them more than a few pieces of cucumber at a time. Also, whenever introducing new food ingredients to your dog, do so in accordance with your vet’s advice and start with very small amounts gradually, as change of food and new treats can also lead to an upset stomach in many dogs.

Another health hazard to worry about is choking. Dogs are typically eager eaters and don’t always take the time to chew their food properly before trying to swallow it. Giving a whole or even half of a cucumber to your dog without cutting it up first could lead to choking. Sometimes food that gets swallowed too quickly gets stuck at the back of the throat and can even block the dog’s airway, which is life-threatening and needs immediate emergency care. You can easily avoid this danger by always cutting cucumber into slices or small pieces before offering any to your pooch.

Cucumber seeds can also lead to an upset stomach in some dogs, so consider removing them first. The skin of many fruits and veggies is often contaminated with pesticides, so wash the cucumber first and peel the skin before slicing it up for your pooch.


Finally, cucumbers contain a potentially toxic and irritating compound called cucurbitacin, which is responsible for the bitterness. Newer studies are suggesting they may have some beneficial effects on human health, but they may also lead to vomiting and stomach upset if present in excess. Cucurbitacin is mostly found in the roots, stems, and leaves, but can also be present in the fruit. This is another reason to peel the cucumber, but also to cut off the ends before slicing it up for your pooch.

Fun Feeding Ideas to Consider

Dogs are typically happy to eat cucumber slices plain, but there are many different things that you can do to create fun feeding opportunities that your dog is sure to appreciate. One easy idea is to put cucumber chunks in an interactive toy, like a Kong, to create a rewarding challenge for your dog to take on. Here are a few other ideas to consider:

  • Make Mini Cucumber Sandwiches. Apply a very thin layer of doggie-safe peanut butter (without any additives or xylitol, which is toxic for dogs) on a cucumber slice, and then place a second cucumber slice on top to create a fun mini sandwich for snack time. You can use mashed banana or apple instead of peanut butter. Make sure your dog has had peanut butter before, and offer all of these in moderation, as too much of anything isn’t good, and peanut butter is quite fatty.
  • Add Extra Flavor. If your dog isn’t attracted to cucumbers on their own, you can soak some slices or chunks in beef or chicken broth to infuse extra flavor that no dog would resist. But if they’re not a fan, don’t force them; find other treats they like more.
  • Make a Game Out of Snack Time. When snack time comes around, consider hiding a few pieces of cucumber around the house or yard for your dog to sniff out. It will keep them busy and active while they find their rewards.

Try different feeding methods every time you cut a cucumber up to share with your pooch to keep things fresh and exciting.

Westie eating cucumber
Image: Tim photo-video, Shutterstock

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Our Final Thoughts

Cucumbers are easy to find in the store and can be easily grown at home, so getting your hands on some to give your dog an occasional treat should never be a problem. Cucumbers are just as good for humans as they are for dogs, so you and your pooch can actually share the same snack from time to time. While cucumbers shouldn’t be a predominant part of your dog’s diet, there is no reason to avoid them.

Have you ever fed your dog a cucumber? If so, how did they like and react to it? We want to know all about the cucumber antics you’ve experienced with your pup!

Featured Image Credit: Pixabay

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