Cloaca

The cloaca is a multi-purpose opening found in many animals like birds, reptiles, and amphibians. It serves as a common chamber where the digestive, urinary, and reproductive systems meet. Through the cloaca, waste materials like feces and urine exit the body, and in some species, reproductive activities such as laying eggs or mating also occur. This efficient design allows these animals to perform multiple biological functions through a single opening, simplifying their anatomy and conserving space.