Only 3% of bird species have penises.
0
Bats sleep 18-20 hours per day.
5
The largest breed of rabbit is the Flemish Giant.
65
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
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
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4