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
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Denmark has twice as many pigs as there are people.
66