Sloths take two weeks to digest their food.
243
The reindeer is the only mammal that can see UV light.
17
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
The elephant brain weighs about 6,000g.
274
In 1949, an official boxing match between a bear and a man was held. The bear won.
41