BIRDS DO IT BEES DO IT, EVEN EDUCATED FLEAS DO IT....

I guess even horseshoe crabs do it........fall in love that is.

Rusty Griswold: [watching the romantic couple make out at the table] Dad he's grabbing her tits right there at the table!
Clark Griswold: Just eat your breakfast, Russ.
Rusty Griswold: [Rusty still watching the couple] ... Dad, I think he's gonna pork her.
Clark Griswold: He's not gonna pork her, Russ.
Rusty Griswold: I think he's gonna.
Clark Griswold: He may pork her, finish your breakfast.

Courtesy of Shanghai Aquarium.