The elephant brain weighs about 6,000g.
274
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
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9