Cats recognise the voice of their owner, but never evolved to care.
22
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
Parrot parents "name" their children with a signature call.
112
The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
21