Vegetables · Food guide
Can dogs eat cucumbers?
Cucumber is almost all water, very low in calories, and a great snack for dogs who need to lose weight.
Not a substitute for advice from your vetUpdated Sep 26, 2026
AI imageHow much cucumbers can your dog have?
As a snack, the 10% rule applies. As part of a balanced meal, the amount depends on the whole feeding plan.
No single food covers all nutrients.
Set your dog's ideal weight.
As a snack, no more than a day. That's .
Daily energy needs calculated the same way as in the Kahuno app.
The 10% limit applies to snacks and treats according to WSAVA, not to meals.
What's in cucumbers?
Composition per 100 g
Energy and macros
| Energy | 16 kcal |
| Protein | 1.1 g |
| Fat | 0.2 g |
| Carbohydrates | 2 g |
| Fiber | 0.9 g |
| Water | 97 g |
Minerals
| Calcium | 19 mg |
| Phosphorus | 15 mg |
| Ca : P ⓘ | 1.23 : 1 |
| Sodium | 3 mg |
| Potassium | 181 mg |
| Magnesium | 12 mg |
| Iron | 0.2 mg |
| Zinc | 0.1 mg |
| Copper | 31 µg |
| Iodine | 2 µg |
Vitamins and fatty acids
| Vitamin A | 24 µg RE |
| Vitamin D | 0 µg |
| Vitamin E | 0 mg |
| Linoleic acid | 0.05 g |
| Omega-3 | 0.04 g |
| EPA | 0 g |
| DHA | 0 g |
Source: Max Rubner-Institut. (2025). Bundeslebensmittelschlüssel (BLS), Version 4.0 — Deutsche Nährstoffdatenbank. doi.org
Key facts at a glance
What to watch out for
- Never feed cucumbers that taste bitter: they contain toxic cucurbitacins
- No pickles (salt, vinegar, spices)
Safety rating for each dog
Can Romeo handle cucumbers?
This page applies to dogs in general. In Kahuno, you add intolerances to the dog profile, and every ingredient gets a color-coded dot when you log it, checked for your dog specifically. Whoever feeds the dog in your household sees it right away.
Frequently asked questions
How much cucumbers can my dog eat?
As a snack alongside regular food, the 10% rule applies. For a normally active 10 kg dog, that's about 394 g of Cucumber per day. No single food covers all nutrients, so as part of a balanced meal, the amount depends on the whole feeding plan. If you make your dog's food yourself, have a veterinary nutritionist check the feeding plan.
What should I do if my dog ate too much cucumbers?
Usually the dog reacts with soft stool or gas. Offer water and make the next meal smaller. If your dog vomits, seems lethargic or has ongoing diarrhea, call your vet.
