The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
The elephant brain weighs about 6,000g.
274
Cows can sleep standing up, but they can only dream lying down.
745
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
A puppy is born blind, deaf, and toothless.
16
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17