A crocoduck is a hybrid, also known as a chimera, of a crocodile (or alligator) and a duck. Believed to have been created by a foul magician known as Kirray in the not-so distant past, the first crocoduck must have escaped during the destruction of it's creator. To this day, the crocoduck, which many think is just a legend, inhabits swamps and marshes and other desolate regions.
All crocoducks are female and they mate freely with normal ducks, laying a clutch of 6-10 eggs of which most hatch and thankfully most die before reaching adulthood (otherwise the beasts would over-run the countryside). Once grown and escaped from the nest of it's youth, the crocoduck is a sad, solitary creature, spending it's days wandering it's territory, fighting other crocoducks and even crocodiles, and mating with (then eating) normal ducks.