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
Gorillas can catch human colds and other illnesses.
205
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17