This chapter has been a long time coming. For anyone who has been waiting for it thank you for your patience. Now that I am back in the groove there are more chapters to follow. As usual constructive criticism is appreciated. I am quite aware my grammar and punctuation need work along with many other mistakes. To the anonymous haters.
Male muscovy ducks, for example, have corkscrew-shaped penises that spring out from their body in less than half a second and are 20cm long when erect. Other species' length varies from 1. They twist in the opposite direction to the male duck's penis. But, crucially, they have dead ends they can try to send the males down if they don't want to have their ducklings.
Every physical characteristic your cat has contributes to survival. The barbs on a male cat's penis are no exception. They help ensure that his genes are passed on through successful mating. He was not born with them, and if he was neutered very young he may never even develop them.
But whale and dolphin penises are a lot tougher—quite literally. Orbach, a postdoctoral fellow at Dalhousie University and research associate at Mount Holyoke College, had the vaginas ready. Then they brought on Kelly for her penile inflation expertise.