When dragonflies mate, their tails form a love heart.
22
Cats recognise the voice of their owner, but never evolved to care.
22
In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
46
Cats sleep for 70% of their lives.
8
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