It also acts like a raincoat. The fur on a koala's bottom is extra thick so that the koala can comfortably rest in trees. In an ideal habitat in the wild, male koalas live for about 10 years, while females may live a few years longer. Thousands of koalas are killed each year by cars and dogs. Koalas are marsupials, related to kangaroos.
Most marsupials have pouches where the tiny newborns develop.
A koala mother usually gives birth to one joey at a time. A newborn koala is only the size of a jelly bean. Called a joey, the baby is blind, naked, and earless. As soon as it's born, this tiny creature makes its way from the birth canal to its mother's pouch. There it stays, safely tucked away, growing and developing for about seven months.