When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Dogs sometimes fake being sick to get attention.
26
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4