When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
A scorpion can hold its breath for up to 6 days.
19
Early American humans hunted car-size armadillos and used their shells for houses.
12
There's a rare breed of pig that looks like a sheep.
14
Lobsters have blue blood.
476
Lurch, a Watusi bull, had the largest horns in the world.
32