Cats recognise the voice of their owner, but never evolved to care.
22
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
The reindeer is the only mammal that can see UV light.
17
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