Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Denmark has twice as many pigs as there are people.
66
Dolphins have names for one another.
18
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12