Only 3% of bird species have penises.
0
Sloths take two weeks to digest their food.
243
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
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Sheep, goats, octopuses, and toads have rectangular pupils.
7