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
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Cows can sleep standing up, but they can only dream lying down.
745
Only 3% of bird species have penises.
0
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
There's a rare breed of pig that looks like a sheep.
14