The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
Bats sleep 18-20 hours per day.
5
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
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Gorillas can catch human colds and other illnesses.
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