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
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
A cow produces around 200,000 glasses of milk in her lifetime.
373
Dolphins have names for one another.
18
Gorillas can catch human colds and other illnesses.
205
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20