Dogs can eat mangetout (also known as mange tout or snow peas) safely in moderation. Mangetout is a low-calorie vegetable rich in vitamins A, C, K, fiber, and minerals beneficial to dogs. However, there are some precautions to consider: the pods can be tough and fibrous, posing a choking hazard if not cut into small pieces, and they contain natural compounds that might cause digestive upset in large quantities. Also, mangetout should be cooked and given in moderation, avoiding feeding it to puppies due to their sensitive digestive systems. It should never replace a dog's balanced diet but can be a healthy occasional treat when prepared properly.