All beasts living in native habitat are called wild. They are distinguished from domestic animals by aggressive behavior, natural feeding and external appearance.

It is peculiar to this kind of animals to have cautious attitude to people. Mammals, whose young ones are suckled with milk, predominate over other wildlife. 

All animals living near us are called domestic. People keep, feed and take care of them. They live in special premises, such as aviaries, chicken coops, stables or cattle yards.

Domestic animals give us meat, wool and milk. They can share a house with a man in his dwelling. Among such home pets are parrots, cats, dogs, fishes and even snakes. They are caged in or live in terrariums and aquariums. 

Lions, tigers, bears, wolves, foxes and many others are related to predators. Their essential meal is animals. They have a hunt and kill their prey. But some of flesh-eaters, for example, griffons and hyenas eat dead animals. Predators are body-snatches of natural ecosystems.

Weed-eaters prefer only plant food. They are kangaroos, sloths, koalas, giant tortoises and others. Some animals can change their habits becoming omnivorous.