When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
A dairy cow can produce more milk when listening to music.
446
Cats recognise the voice of their owner, but never evolved to care.
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
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
The cat brain weighs about 30g.
167
Gorillas can catch human colds and other illnesses.
205