Cats recognise the voice of their owner, but never evolved to care.
22
The most expensive cow in the world was sold in 2009 for $1.2 million.
-3
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Gorillas can catch human colds and other illnesses.
205
A lion in the wild usually makes no more than twenty kills a year.
186
The octopus does not have a blind spot.
273
The largest earthworm on record was found in South Africa and measured 22 feet.
151
Early American humans hunted car-size armadillos and used their shells for houses.
12