Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Parrot parents "name" their children with a signature call.
112
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
Condoms were originally made of animal intestines or linen.
347
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20