Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
A cow produces around 200,000 glasses of milk in her lifetime.
373
Gorillas can catch human colds and other illnesses.
205
In Australia, there are spiders big enough to eat snakes.
20
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