When dragonflies mate, their tails form a love heart.
22
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
On some poorly researched trivia lists it is stated as a fact that a pregnant goldfish is called a twit. This is not true as goldfish lay eggs.
71
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
Cats recognise the voice of their owner, but never evolved to care.
22