Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
12
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20