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
Sharks have been on the planet longer than trees.
14
Cats recognise the voice of their owner, but never evolved to care.
22
The largest breed of rabbit is the Flemish Giant.
65
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13