Only 3% of bird species have penises.
0
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
156
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
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
Mosquitoes don't just bite you, they also pee on you.
11
Denmark has twice as many pigs as there are people.
66