Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Cows can sleep standing up, but they can only dream lying down.
745
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
Tigers can see 6 times better at night than humans.
305
A 42-foot sperm whale has about 7 tons of oil in it.
209
Jumping fleas can accelerate 50 times faster than the space shuttle.
218