When dragonflies mate, their tails form a love heart.
22
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Tigers, leopards, and jaguars love "Calvin Klein's Obsession for Men". The scent is used to attract animals to cameras in the wilderness, and was even a turn on for one pair of Jaguars who were subject to it.
17
Cats recognise the voice of their owner, but never evolved to care.
22
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