Only 3% of bird species have penises.
0
Bats sleep 18-20 hours per day.
5
Dolphins have names for one another.
18
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Early American humans hunted car-size armadillos and used their shells for houses.
12
When dragonflies mate, their tails form a love heart.
22
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34