Can my dog eat cucumber?
Can dogs eat cucumber?Yes
Raw in thin slices, unseasoned; not bitter-tasting cucumbers or pickled gherkins.
Yes, dogs can eat cucumber. It's around 95% water, has only about 15 kcal per 100 g and makes a light snack raw in thin slices. It's better not to give a cucumber that tastes unusually bitter, and pickled gherkins are off limits because of the salt and spices.
How much cucumber can your dog eat?
Enter the weight – the amount updates straight away. You can adjust age, activity and neutering below.
How the calculator works
- Daily requirement: Resting energy requirement 70 × 15 kg^0.75 ≈ 534 kcal × factor 1.6 ≈ 855 kcal.
- Treat allowance: at most 10% of that = 86 kcal for all treats combined.
- Calorie limit: 86 kcal ÷ 15 kcal/100 g = 573 g of cucumber.
- Guide value for dogs 10–25 kg: 6 × cucumber slice (approx. 0.5 cm thick) at 6 g each = 36 g (cautious guide value set by our editors).
- Recommendation: the smaller of the two, rounded down to half portions → 6 × 6 g = 36 g ≈ 5 kcal.
Sources: 10% rule from the WSAVA guide to treats · kcal value: USDA FoodData Central. Daily requirement as in the dog calorie calculator.
Result · 15 kg · Adult
Up to 6
× cucumber slice (approx. 0.5 cm thick) on a snack day
(≈ 36 g, 5 kcal)
Treat allowance 86 kcal (10% of 855 kcal) · 1 cucumber slice (approx. 0.5 cm thick) ≈ 6 g
Limited by: guide value
Here the guide value for dogs 10–25 kg sets the limit (cautious guide value set by our editors): at most 6 × cucumber slice (approx. 0.5 cm thick). In terms of calories, up to 573 g would be possible.
A cautious starting value set by our editors. Cucumber is very low in calories; the amount is limited because too much in one go can upset the stomach. The AKC advises starting with a few small slices.
This applies if it's the only snack that day – if your dog gets other treats too, give correspondingly less.
The app calculates recipes in grams, kcal and portions to suit your dog's weight, age, activity and allergies.Cucumber for dogs: amount by weight
| Weight | Maximum per snack day | kcal |
|---|---|---|
| 5 kg | 3 × cucumber slice (approx. 0.5 cm thick)≈ 18 g | ≈ 3 |
| 10 kg | 3 × cucumber slice (approx. 0.5 cm thick)≈ 18 g | ≈ 3 |
| 20 kg | 6 × cucumber slice (approx. 0.5 cm thick)≈ 36 g | ≈ 5 |
| 30 kg | 10 × cucumber slice (approx. 0.5 cm thick)≈ 60 g | ≈ 9 |
| 40 kg | 10 × cucumber slice (approx. 0.5 cm thick)≈ 60 g | ≈ 9 |
- All snacks together no more than 10% of daily calories (WSAVA recommendation). If your dog gets other treats too, give correspondingly less.
- Guide value per weight class – small up to 10 kg, medium 10–25 kg, large over 25 kg: A cautious starting value set by our editors. Cucumber is very low in calories; the amount is limited because too much in one go can upset the stomach. The AKC advises starting with a few small slices.
What's in it
- Around 95% water and only about 15 kcal per 100 g – a reward that adds hardly any calories.
- Fat-free and very low in sodium, so well suited to dogs that need to lose weight.
- Crunchy and refreshing; frozen slices make a cool chew in summer.
- Contains vitamins K and C as well as potassium – although only a little in snack amounts.
What to watch out for
- Too much in one go, or introducing it too quickly, can cause stomach and gut upsets.
- A whole cucumber or large pieces can cause choking or an intestinal blockage, especially in small dogs.
- Bitter-tasting cucumbers contain more of the toxic bitter compound cucurbitacin, especially at the ends and in the skin.
- Pickled gherkins and sour pickles contain a lot of salt and often garlic or onion.
- Shop-bought cucumber water can contain xylitol, which is toxic to dogs.
- Some dogs don't tolerate cucumber; the seeds and skin can be hard on sensitive stomachs.
How to prepare cucumber
How to do it
- Wash the cucumber thoroughly
- Cut it into thin slices or small pieces
- For a sensitive stomach, peel it, cut off the ends and scrape out the seeds
- Taste a piece first: if the cucumber is bitter, don't feed it
- Freeze slices if you want a cool chew for hot days
Better not
- Pickled gherkins or sour pickles
- Seasoned cucumber salad with dressing, onions or garlic
- A whole cucumber to nibble on
- Shop-bought cucumber water or drinks with sweetener
How often?
If your dog tolerates it well, cucumber can be a regular part of its snack selection – in small amounts, and together with all other treats below 10% of daily calories.
Frequently asked questions about cucumber
Can my dog eat cucumber with the skin on?
Yes, the skin is usually fine if the cucumber has been washed. However, the bitter compound cucurbitacin, if present at all, is found mainly in the skin and at the ends. If your dog has a sensitive stomach or the cucumber tastes bitter, it's better to peel it and cut off the ends.
Can my dog eat cucumber seeds?
Yes, the seeds aren't toxic. Some dogs and puppies digest them poorly, though, and get tummy ache. In that case, scrape out the seeds with a spoon beforehand.
Can my dog eat bitter cucumber?
Better not. A bitter taste indicates a higher content of cucurbitacin, a toxic bitter compound of the cucumber plant. Small amounts are usually harmless – but throw away a noticeably bitter cucumber anyway.
Can my dog eat pickled gherkins?
No. Pickled gherkins and sour pickles contain a lot of salt and often spices such as garlic or onion, which are harmful to dogs.
Can puppies eat cucumber?
Yes, puppies can eat raw cucumber slices too. Cut them thin and small, remove the seeds if your puppy has a sensitive stomach, and give just one piece at first.
Can my dog eat cucumber every day?
Yes, if your dog tolerates it well, cucumber can be a regular part of its snacks. Stick to small amounts to avoid stomach and gut upsets, and count it as part of the treats.
Can my dog drink cucumber water?
Homemade water with a few slices of cucumber is safe. Shop-bought cucumber water can contain sweeteners such as xylitol – that's toxic to dogs.
Is cucumber good for overweight dogs?
Yes, as a replacement for high-calorie treats. According to the AKC, about 50 g of cucumber slices (half a cup) has only around 8 kcal, while a medium-sized dog biscuit has about 40. Together with exercise and a feeding plan, this can help with weight loss.
Can cucumber give my dog diarrhoea?
Yes, in large amounts or if your dog isn't used to it. Introduce cucumber slowly and keep an eye on the stools. If your dog vomits, has severe diarrhoea, blood in its stool or vomit, weakness or loss of appetite, call your vet immediately.
Can my dog eat cucumber from a salad?
Only if it's plain and unseasoned. Dressing, salt, onions or garlic don't belong in the bowl. The easiest thing is to set a few slices aside for your dog while you're chopping.
Similar foods
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- YesFruitWatermelonOnly the flesh, without the seeds or rind, in small cubes.See the answer
- In moderationVegetablesTomatoOnly ripe, red tomatoes without any green; never unripe fruit or plant parts.See the answer
- In moderationVegetablesBell pepperRipe bell peppers without seeds or stalk, cut small; never hot varieties.See the answer
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Sources
- Can Dogs Eat Cucumbers? – American Kennel Club (AKC)
- Can Dogs Eat Cucumbers? – PetMD (vet-reviewed)
- Cucumber, with peel, raw (SR Legacy, FDC 168409) – USDA FoodData Central (kcal value)
- Feeding treats to your dog – WSAVA Global Nutrition Committee (10% rule in the calculator)
Reviewed on · DoggoMeal editorial team
This page is no substitute for veterinary advice. Dogs with pre-existing conditions – for example of the kidneys, liver or pancreas, or with diabetes – and dogs with allergies often need their own rules. If your dog has symptoms or you're unsure, ask your vet.
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