A cow gives nearly 200,000 glasses of milk in her lifetime.
Blue whale's weight
The world's largest mammal, the blue whale, weighs 50 tons at birth. Fully grown, it weighs as much as 150 tons. The heart of a blue whale is as big as a car, and it's tongue is as long as an elephant.
More Animals Facts
The hippopotamus gives birth under water and nurses its young in the river as well, though the young hippos do come up periodically for air.
A woodpecker can peck twenty times a second.