When dragonflies mate, their tails form a love heart.
22
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Cats recognise the voice of their owner, but never evolved to care.
22
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
The reindeer is the only mammal that can see UV light.
17
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10