"The spotted hyena has a genital set-up that is unique among animals. [...] They have a pseudopenis; an extended clitoris through which they urinate, have sex, and give birth. In order to have sex a male has to place his penis in the pseudopenis, which is extremely difficult without her complete cooperation. Once the two have mated, the female has the option of simply peeing, and flushing out much of the male's sperm."
Nature constantly engineers new and creative solutions to all sorts of problems—turning our stereotypes about sex upside-down along the way.