Yes, zucchini is perfectly safe to eat. In fact, it is packed with lots of useful nutrients. This plant produces long, green squash that is full of fiber and vitamins. They make great high-calorie treats for any dogs needing a balanced diet.
A cup of raw zucchini is not that unhealthy. It contains 20 calories. Zucchini is low in fat and cholesterol, and will not cause your dog to become obese. So it is a good choice as a reward for overweight dogs. In short, it is safe to give your dog zucchini, but that does not mean that you should give your dog too much of it.