Sleep Talking - Causes. Home >> Sleep Disorders Problems >> Sleep Talking >> Sleep Talking - Causes. Other Sections. Sleep talking may be brought on by stress, depression, sleep deprivation, day-time drowsiness, alcohol, and fever. In many instances sleep talking runs in families, although external factors seem to stimulate the behavior.
- 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. - There is a myth that Koalas sleep a lot because they âget drunkâ on gumleaves.
Females has two teats and a rear opening pouch.   Northern koalas can grow to 740 mm and 9 kg for males and 720 mm and 7.25 kg for females. Southern koalas can grow to 820 mm and 15 kg for males and 730 mm and 11 kg for females.   They can live for up to 18 years for females and a bit less for males.   They spend up to 20 hours per day sleeping and the rest eating.   Koalas can leap up to 2 metres and can swim.