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
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
A cow produces around 200,000 glasses of milk in her lifetime.
373
Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
11
Jellyfish as a species are actually older than dinosaurs and sharks.
383
The most expensive cow in the world was sold in 2009 for $1.2 million.
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