A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
The octopus does not have a blind spot.
273
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
Rattlesnake mating sessions have been known to last more than 22 hours.
232
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
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