When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2