Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Bats sleep 18-20 hours per day.
5
The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
The human brain is more active during sleep than during the day.
28
If a native Hawaiian woman places the flower on her right ear, she is available. (The bigger the flower, the more desperate!)
1k
A dairy cow can produce more milk when listening to music.
446