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
Bats sleep 18-20 hours per day.
5
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The cat brain weighs about 30g.
167
Tigers can see 6 times better at night than humans.
305