The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
When you shave a guinea pig it looks like a little hippo.
19
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
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