Bats sleep 18-20 hours per day.
5
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
Early American humans hunted car-size armadillos and used their shells for houses.
12
Whales and dolphins can't taste anything other than salt.
11