Like many other kinds of squash, courgette is indeed safe for cats in moderation. (Oh, did you know courgette was a type of summer squash? If not, you're welcome.)
Courgette contains a number of healthy nutrients, such as vitamins A and C, along with plenty of dietary fibre. Vitamin A contributes towards good vision, growth and immune function, while vitamin C supports wound healing and the production of collagen. The dietary fibre in courgette can help regulate healthy bowel movements.
While courgette doesn't contain any compounds that are toxic to cats, you should only feed it to them in moderation. Cats are obligate carnivores, which means their main diet should consist of meat. Nevertheless, occasionally supplementing meat-heavy diets with vegetables like courgettes can provide them with additional nutrients and variety.
If you do feed your cat courgette, make sure it's unseasoned, unbuttered, and baked or steamed. Seasonings and butter can cause stomach problems, and raw courgette may be difficult for your cat to digest.
As always, before introducing a new food item into your pet's diet, consult with your veterinarian first. If your cat eats zucchini (or any food) and is showing signs of illness such as lethargy, diarrhoea, or vomiting, reach out to your veterinarian immediately. If they require veterinary care related to eating any unsafe foods, cat insurance can help cover the cost of treatment.