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  1. Cloaca - Wikipedia

    Cloaca of a red-tailed hawk A cloaca (/ kloʊˈeɪkə / ⓘ kloh-AY-kə), pl.: cloacae (/ kloʊˈeɪsi / kloh-AY-see or / kloʊˈeɪki / kloh-AY-kee), or vent, is the rear orifice that serves as the only opening for the …

  2. Cloaca: The Single Opening in Animals, Plus Human Implications

    A cloaca is a single bodily opening in many animals for excretion and reproduction. In rare human cases, failure to separate during development leads to complications.

  3. What Is a Cloaca? One Opening for Everything - ScienceInsights

    Mar 9, 2026 · A cloaca is a single body opening that handles three jobs at once: digestion waste, urinary waste, and reproduction. Instead of having separate exits for each system, animals with a cloaca …

  4. Cloaca | Mammals, Birds, Reptiles | Britannica

    Jun 19, 2026 · Cloaca, (Latin: “sewer”), in vertebrates, common chamber and outlet into which the intestinal, urinary, and genital tracts open. It is present in amphibians, reptiles, birds, elasmobranch …

  5. Cloaca (embryology) - Wikipedia

    The cloaca (pl.: cloacae) is a structure in the development of the urinary and reproductive organs. The hind-gut is at first prolonged backward into the body-stalk as the tube of the allantois; but, with the …

  6. What is Cloaca? And Why Do Most Animals Have it Except Humans?

    Jan 14, 2021 · Cloacas are normal in most animals. But when humans have cloacal malformation, it poses serious health risks.

  7. Why some animals have just one hole for everything – from pooping to ...

    May 21, 2025 · Many animals have a single opening called a cloaca that handles digestion, waste elimination, and reproduction all in one. The cloaca plays a key role in how these species live and …

  8. Cloacal Malformations: Causes, Diagnosis & Treatment

    Cloacal malformations are when a baby’s vagina, urinary tract and anus fuse together during fetal development instead of being separate. Surgery fixes it.

  9. CLOACA Definition & Meaning - Merriam-Webster

    The meaning of CLOACA is sewer. [New Latin, from Latin] : the common chamber into which the intestinal and urogenital tracts discharge especially in monotreme mammals, birds, reptiles, …

  10. What is a Cloaca and Which Animals Have One? - Biology Insights

    Jul 26, 2025 · A cloaca is a unique bodily opening found in some animals. This single posterior opening serves as a multi-purpose exit point for various internal systems. Unlike the separate openings found …