Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
Mosquitoes don't just bite you, they also pee on you.
11
There's a rare breed of pig that looks like a sheep.
14
The elephant brain weighs about 6,000g.
274
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
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4