When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
Early American humans hunted car-size armadillos and used their shells for houses.
12
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268