Dogs sometimes fake being sick to get attention.
26
Female kangaroos have three vaginas.
2
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Domestic pigs average a top speed of about 11 miles per hour.
182