When dragonflies mate, their tails form a love heart.
22
Only 3% of bird species have penises.
0
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Gorillas can catch human colds and other illnesses.
205
A cow produces around 200,000 glasses of milk in her lifetime.
373
Squirrels forget where they hide about half of their nuts.
698
Cows can sleep standing up, but they can only dream lying down.
745
A scorpion can hold its breath for up to 6 days.
19