It is not recommended to feed chestnuts to cats, as chestnuts are a high-carbohydrate food. Cats are carnivores and have a relatively weak ability to break down carbohydrates. If a cat eats a large amount of chestnuts, it may experience bloating, indigestion, and other problems. Therefore, it is best not to feed cats chestnuts or similar foods. 
Dangers of cats eating chestnuts:
1. Cats are prone to choking on chestnuts. Eating too many chestnuts can also cause indigestion, constipation, diarrhea, vomiting, and other problems.
2. It will affect the cat's appetite, making the cat not want to eat cat food, and this will lead to malnutrition in the long run.
3. Nuts contain high levels of phosphorus, which may lead to kidney stones in cats.
4. Eating too many snacks like chestnuts can affect a cat's regular meals, leading to picky eating habits. Cats can also easily become thin. Chestnuts are not easy to digest, and eating too many can easily cause obesity, diarrhea, and other problems.
