Someone asked why dogs can eat feces but cannot eat pre-packaged meals. In fact, dogs do not love eating feces; some dogs or puppies may eat feces. The main reason is due to imitation of other dogs around them and the pressure from their environment, hoping to maintain consistency. Additionally, some dogs have limited food supply and often lack nutrients, and feces contain vitamins. Dogs indeed do not eat pre-packaged meals because their digestive system is not suited for it, and their sense of smell is extremely sensitive. They can easily distinguish the fats, salt, sugar, and preservatives in food, which is why they do not eat it.