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
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
Tigers can see 6 times better at night than humans.
305
A 42-foot sperm whale has about 7 tons of oil in it.
209
The reindeer is the only mammal that can see UV light.
17