Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Dogs sometimes fake being sick to get attention.
26
Cows can sleep standing up, but they can only dream lying down.
745
Only 3% of bird species have penises.
0
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293