Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Elephants are terrified of Bees and actually have a special, distinct vocalization for “Run away the Bees are angry”
49
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
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
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
When cats are happy, they may squeeze their eyes shut.
10
The Basenji dog is the only dog that is not able to bark.
4