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
Bats sleep 18-20 hours per day.
5
Cats recognise the voice of their owner, but never evolved to care.
22
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12