Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
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