Considering that the day is 24 hours long, 22 hours of sleep is quite a lot. These sweet animals, which are common in Australia, spend most of their day sleeping.
In the few hours they are awake, they are known to be very active. They usually hang out in the high branches of trees, which they think is safer for them. Another reason why koalas roam in trees is that they get most of their food from the leaves of eucalyptus trees. Unfortunately, these leaves have very little nutritional value. If you sleep more than 18 hours a day, you might be a koala.