A home is a safe place to live. Homes shelter animals from the weather, protect them from predators or enemies, provide them with a safe place to bear and raise their young, and sometimes even provide a place to store food. Homes serve these same purposes for human beings.
Animals mostly know how to build their homes from instinct.
They make use of natural materials such as sticks, grass, dirt, mud, and wood. They also use materials made inside their own bodies such as silk and beeswax. Some animals such as beavers build their own homes. Some animals such as woodpeckers live in homes built by other animals. Shelled animals like turtles carry their homes with them.