It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The seahorse is the only fish to have a neck.
12
When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
23
Bats sleep 18-20 hours per day.
5
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
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12