Tigers are mammals. Females give birth to litters of two to six babies. The mother tiger raises her babies without help from the male. Cubs learn to hunt when they are about a year and a half old. They stay with their mother until about three years of age.
Tigers are endangered. There were once eight different kinds of tigers. Three of those became extinct during the twentieth century. Hunting and the destruction of forests have cut the number of tigers to only a few. All five kinds of tigers are endangered today. Estimates say there are only a few thousand tigers still living in the wild.