The Basenji dog is the only dog that is not able to bark.
4
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
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
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
A dairy cow can produce more milk when listening to music.
446
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
The cat brain weighs about 30g.
167
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20