Denmark has twice as many pigs as there are people.
66
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The head of a jellyfish is called the "Bell."
6
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9