Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
When cats are happy, they may squeeze their eyes shut.
10
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
A scorpion can hold its breath for up to 6 days.
19
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4