Koalas are mostly nocturnal. Nocturnal animals are awake at night and asleep during the day. Koalas, however, sleep for part of the night and also sometimes move about in the daytime. They often sleep for up to 18-20 hours each day.
- An adult koala eats about 1/2 - 1 kilogram of leaves each night.
- There is a myth that Koalas sleep a lot because they ‘get drunk’ on gumleaves. Fortunately, this is not correct! Most of their time is spent sleeping because it requires a lot of energy to digest their toxic, fibrous, low-nutrition diet and sleeping is the best way to conserve energy
Koala in Tree - Perchance to Dream Edition 99