Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
Parrot parents "name" their children with a signature call.
112
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Sheep, goats, octopuses, and toads have rectangular pupils.
7
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402