Cloaca

Cloaca

The cloacal region is also often associated with a secretory organ, the cloacal gland, which has been implicated in the scent-marking behavior of some reptiles, marsupials, amphibians, and monotremes.

Etymology

The word is from the Latin verb cluo, "(I) cleanse", thus the noun cloaca, "sewer, drain".

Birds

!Cloaca of a female bird

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