Yes—guinea pigs can safely eat courgettes, also known as zucchini. These mild, low-calorie vegetables are a hydrating and nutritious addition to their diet when offered in moderation. While not a replacement for hay (the cornerstone of guinea pig nutrition), courgettes can be an excellent supplementary treat packed with fiber, vitamins, and water.

Nutritional Benefits of Courgettes (per 100g):
- Vitamin C: 17.9 mg – Vital to prevent scurvy, a common disease in guinea pigs due to their inability to synthesize their own vitamin C.
- Fiber: 1.0 g – Aids in digestive health and regular bowel movements.
- Water: 95% – Excellent for keeping guinea pigs hydrated, especially in warm months.
- Low Calories: 17 kcal – Helps maintain a healthy weight and prevent obesity.
- Vitamin A: 200 IU – Supports vision, skin, and immune health.
Benefits of Feeding Courgettes to Guinea Pigs
- Great for hydration, especially during summer or dry environments.
- Low in sugar, which makes it safer than fruit and some sweeter vegetables.
- Gentle on the digestive system and unlikely to cause gas or bloat when served properly.
- Offers variety in texture and taste, which helps keep your guinea pig interested in their meals.
Precautions
- Overfeeding courgettes can cause diarrhea, bloating, or loss of appetite due to their high water content.
- Courgettes may have pesticide residue, so it’s essential to wash them well or choose organic when possible.
- Never cook courgettes for guinea pigs—they should always be served raw and fresh.
How to Feed Courgettes
- Wash thoroughly to remove any pesticides or dirt.
- Slice into small, bite-sized pieces.
- Serve 1–2 thin slices, 1–2 times per week as part of a veggie mix.
- Introduce slowly and monitor for any signs of digestive upset.
Can Baby Guinea Pigs Eat Courgettes?
Yes, but only in very small amounts and after 4–6 months of age, once their digestive system has matured. Always start with a tiny piece and observe for 24 hours.
Best Veggie Pairings
Pair courgettes with:
- Bell peppers – high in vitamin C.
- Carrots – in moderation, due to sugar.
- Cucumbers – hydrating and crunchy.
- Leafy greens like romaine or cilantro – provide fiber and variety.

Conclusion
Courgettes are a safe and healthy treat for guinea pigs if given in moderation. They offer a hydrating boost and gentle fiber, but they should never replace hay, which must always be the main part of a guinea pig’s diet. Use courgettes to add variety and nutrients while keeping their digestive system happy and balanced.