What happens if a dog eats cat food?

A dog can occasionally eat cat food, because cat food’s nutrition type is similar to dog food and occasional eating causes no harm. But cat food is high in protein, and large amounts easily cause poor digestion, smelly stool, and soft stool, and long-term feeding causes obesity. In addition, some brands add taurine, good for cats but toxic to dogs in excess, so do not feed too much cat food..