When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The elephant brain weighs about 6,000g.
274
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
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
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11