Can dogs eat cucumber?
The full picture
Cucumber is almost all water (about 96%) and virtually calorie-free, which makes it an ideal treat for overweight dogs or dogs on a diet. It's crunchy, refreshing, and safe for almost every dog. Most dogs enjoy it, though some are indifferent. Cut into appropriate-sized pieces to avoid choking. No preparation needed beyond washing. Avoid pickled cucumbers (too much salt and vinegar).
Risks to watch for
- Choking if pieces too large for small dogs
- Stomach upset if eaten in huge quantities
Potential benefits
- Near-zero calories
- Hydration
- Vitamin K
- Good for weight-loss diets
Safe portion size
Almost unlimited as a treat — small slices throughout the day are fine.
Important: This page is general information, not veterinary advice. Every dog is different, and individual factors (age, breed, health conditions, medications) can change what's safe. If in doubt, always contact your vet — or the Animal PoisonLine on 01202 509000 in the UK.