Can Dogs Eat Courgette? The Verdict
Yes — courgette is an excellent choice of treat for dogs, and it earns a genuine recommendation. It is very low in calories, has a high water content that contributes to hydration, and contains a helpful range of vitamins and antioxidants. Unlike some vegetables that come with significant caveats or preparation requirements, courgette is mild, easy to prepare, well-tolerated by most dogs, and safe to serve both raw and cooked. There is, however, one important warning for dog owners who grow courgettes in their garden: wild or bitter courgettes can contain toxic compounds that pose a serious risk. Read on for the full picture.
Nutritional Benefits of Courgette for Dogs
Courgette may look like a simple summer vegetable, but its nutritional profile is more impressive than its pale green flesh suggests. It is a reliable source of vitamin A (in the form of beta-carotene), which supports healthy vision, skin, and immune function; vitamin C, an antioxidant that protects cells from oxidative damage and supports the immune system; and vitamin B6, which plays a role in protein metabolism, red blood cell production, and neurological function. Courgette also provides potassium, an electrolyte that supports heart function and healthy muscles.
Of particular note are two antioxidant carotenoids found in courgette: lutein and zeaxanthin. These compounds accumulate in the retina and the lens of the eye, where they play a protective role against oxidative damage from light. Research in both humans and animals has associated higher dietary intake of lutein and zeaxanthin with a reduced risk of age-related eye conditions, including cataracts and macular degeneration. While canine-specific research is more limited, the biological mechanisms are shared, making courgette a particularly interesting choice for older dogs or breeds predisposed to eye conditions.
Courgette is also very low in calories — typically around 17 kilocalories per 100 grams — and has a high water content of approximately 95%. This makes it one of the most calorie-efficient vegetable treats available, excellent for dogs that need to manage their weight without feeling deprived.
Raw or Cooked: Both Are Fine
Courgette can be served either raw or cooked, and both formats are safe and nutritious for dogs. Raw courgette retains its full vitamin and antioxidant content and has a satisfying, slightly crunchy texture that many dogs enjoy. It can be sliced into rounds, cut into sticks, or cubed — whichever is most appropriate for your dog's size.
Cooked courgette is softer and may be preferable for older dogs or those with dental sensitivities. Steaming or lightly boiling are the best cooking methods, as they preserve the most nutrients while softening the texture. Courgette should always be served plain — no oil, butter, salt, garlic, onion, or any seasoning. Courgette cooked as part of a ratatouille, stir-fry, or pasta dish is not suitable for dogs, as these preparations typically include ingredients that can be harmful.
What About Courgette Flowers and Leaves?
Courgette flowers — the bright yellow blossoms that appear on the plant — are safe for dogs and non-toxic. They are soft, palatable, and unlikely to cause any digestive issues in most dogs. While less commonly offered as a treat simply due to their delicate nature, there is no reason to prevent a dog from eating one if they encounter it in the garden.
Courgette leaves are also non-toxic. They are rougher in texture and may be mildly fibrous, but they are not harmful. Dogs with access to a kitchen garden are unlikely to cause themselves harm by investigating courgette plants — with one very important exception, covered below.
The Wild Bitter Courgette Warning
This is the most critical piece of information in this article for anyone who grows courgettes at home. Courgettes — like cucumbers, pumpkins, and other members of the Cucurbitaceae family — can occasionally produce fruit that contains high levels of cucurbitacins, naturally occurring bitter compounds that are toxic to both humans and animals.
Cucurbitacin toxicity can occur when courgette plants cross-pollinate with wild cucurbits, revert to a more bitter ancestral form, or when seeds from F1 hybrids are replanted over multiple generations. The resulting fruit may look identical to normal courgette but taste intensely bitter. Consumption of high-cucurbitacin courgette has caused serious gastrointestinal illness — including severe diarrhoea, vomiting, and in extreme cases, electrolyte imbalance — in both humans and animals.
For dog owners with kitchen gardens, the safest approach is to taste a small piece of any home-grown courgette before offering it to your dog. If it tastes noticeably bitter rather than mild and slightly sweet, do not give it to your pet — and do not eat it yourself. Bitter courgette should be discarded. Commercially grown courgettes sold in supermarkets are subject to food safety standards and cucurbitacin content is not typically a concern with purchased produce.
How to Serve Courgette to Your Dog
- Raw: Wash thoroughly, slice into rounds or sticks, or cube into pieces appropriate for your dog's size. Small dogs should receive smaller pieces to prevent any choking risk.
- Cooked: Steam or lightly boil plain. Allow to cool before serving.
- No seasoning whatsoever: Plain only. No salt, garlic, onion, butter, oil, herbs, or spices.
- Home-grown courgettes: Taste before serving. If bitter, discard.
- Portion size: A few slices or small cubes as an occasional treat. While courgette is very low in calories, it should still follow the general rule of treats making up no more than 10% of daily caloric intake.
An Ideal Choice for Overweight Dogs
Given its near-negligible calorie content and high water content, courgette is one of the best vegetable treats for dogs on a weight management plan. It is filling, satisfying to eat, and unlikely to contribute meaningfully to daily caloric totals. Unlike many commercial treats that can account for a significant proportion of a small dog's daily calorie allowance, courgette is a treat owners can offer without concern about undermining dietary efforts.
For dogs following a structured weight loss plan under veterinary supervision, courgette makes an excellent treat substitute for higher-calorie options. Always inform your vet of any dietary changes, even when adding something as low-risk as courgette.
EU and EFSA Context
Courgette is not identified as a harmful food for dogs under EU pet food regulations, and the European Food Safety Authority (EFSA) has not raised concerns about courgette in the context of companion animal nutrition. The cucurbitacin issue is an established food safety concern within EFSA's broader framework for the Cucurbitaceae plant family; guidance advises that bitter-tasting cucurbits should not be consumed due to this risk. This guidance applies equally to dogs. For commercially produced courgette, cucurbitacin is not considered a meaningful safety concern. EFSA's general principle — that supplementary foods should complement a complete and balanced diet — applies here as to all treats.
Quality Dog Food and Treats
For dog owners looking to supplement fresh vegetables with high-quality commercial treats and complete dog food, Zooplus offers a broad range of products suitable for all breeds and life stages — including low-calorie options for dogs that benefit from lighter snacking and formulations designed for dogs with specific dietary needs.
Final Verdict
Courgette is one of the most straightforward and genuinely beneficial vegetable treats you can offer a dog. It is low in calories, hydrating, nutritious, and easy to prepare. The lutein and zeaxanthin content is a particular bonus for eye health, and the mild flavour is well-accepted by most dogs. The key warnings are simple: always serve plain, cut to appropriate size, and if you grow your own, taste it first. Courgette — not zucchini, in this part of the world — deserves a regular place in your dog's treat rotation.