Why do koalas sleep so much? Which predator is the biggest threat to koalas? What happens in a koala hospital? In Koala, you will find the answers to these questions and more as you learn about an animal that is not as cuddly as it looks. Discover the koala's favorite tree, the eucalyptus. Find out what tree dieback is and how it reduces koala habitat. See how some people are trying to share the place where they live with koalas. Read about how koalas have come to represent all Australian species and their struggles for survival.