What a Pig!
Insects aren't the only ones with interestingly shaped genitalia. The penis of the male pig is shaped like a corkscrew and is very muscular. The female, too has a corkscrew-shaped cervix. To court his mate, the boar will begin by approaching a sow in estrus and pressing his snout against her head. He will then move his head to her genital-anal area and nuzzle her intensely. After several mountings, penetration occurs. As you may know, pig orgasms can last up to half an hour.