The male seahorse carries babies and 'gives birth' to them instead of the female.
7
The elephant brain weighs about 6,000g.
274
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
Dolphins have names for one another.
18
When dragonflies mate, their tails form a love heart.
22
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250