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 sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12