Piglets when young will eat mainly the milk of the mother pig. When grown up they are omnivores and voracious eaters. Unlike pigs, chicks hatch from eggs and they also do not drink milk. They often follow the mother hen to find food, from starchy granules to small animals that provide protein such as worms, crickets, insects. Dogs have been kept by humans since ancient times. Dog food is often tied to the owner. But the main ingredients include starch and animal meats.