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
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
A domestic cat can sprint at about 31 miles per hour.
274
Early American humans hunted car-size armadillos and used their shells for houses.
12
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16