When cats are happy, they may squeeze their eyes shut.
10
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Alligators can live up to 100 years.
337
Dogs have been man's pet for over 14,000 years.
224
A cow produces around 200,000 glasses of milk in her lifetime.
373
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328