Denmark has twice as many pigs as there are people.
66
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
A puppy is born blind, deaf, and toothless.
16
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
The male seahorse carries babies and 'gives birth' to them instead of the female.
7