Domestic pigs average a top speed of about 11 miles per hour.
182
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Whales and dolphins can't taste anything other than salt.
11
The oldest recorded elephant lived for 82 years.
213
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6