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
Cats recognise the voice of their owner, but never evolved to care.
22
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59