The male seahorse carries babies and 'gives birth' to them instead of the female.
7
When dragonflies mate, their tails form a love heart.
22
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Lobsters have blue blood.
476
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25