The frog has two openings at the poster of its body whether it is a male or a female. The two openings are the anus and the cloaca or the cloacal opening. The function of the anus is to get rid of the undigested food and faeces by the process of defeacation. The cloacal opening has two functions as it is related to the urinary system and the reproductive system. It functions as a urinary opening and a reproductive opening.