When buying a puppy, you may ask the boss what you should feed it. Most bosses will teach you to feed it a little warm milk or milk plus dog food, saying that this can make it develop well.

But after feeding milk to healthy puppies, surprisingly, about 96% of the puppies will suffer from diarrhea. This is because the puppy's intestines and stomach cannot absorb and digest milk. The ingredients of dog milk and cow's milk are completely different.

Dog milk contains high protein, high fat and low lactose, while cow's milk contains low protein, low fat and high lactose. The composition of the two is exactly the opposite.