The baby bats are called pups. When a pup is born, it usually has no hair and its eyes are closed. It clings to the mother bat and drinks milk from her. When the pup is about four months old, it learns to fly. Depending on the species, bats can be gray, brown, white or reddish brown.
Bats are very sociable animals, and live in large colonies.
Depending on the type of bat, their life span is between four and thirty years. Bats like to live in dark places. Caves, holes in trees and even buildings are favorite homes. Because bats sleep during the day and are active at night, they are called nocturnal. Bats sleep upside down.