The most expensive cow in the world was sold in 2009 for $1.2 million.
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When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
The elephant brain weighs about 6,000g.
274
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Cows can sleep standing up, but they can only dream lying down.
745
Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
10
George was the world's largest dog who weighed 233 pounds, stood at 43 inches tall from paw to shoulder, and ate 180 pounds of food a month.
7