When dragonflies mate, their tails form a love heart.
22
Denmark has twice as many pigs as there are people.
66
Condoms were originally made of animal intestines or linen.
347
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
A cow produces around 200,000 glasses of milk in her lifetime.
373
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The Basenji dog is the only dog that is not able to bark.
4