The cat brain weighs about 30g.
167
Squirrels forget where they hide about half of their nuts.
698
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
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11