No ,male dogs do not possess cloaca but placental mammals have
cloaca in their embryonic stage.
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A cloaca is an opening in the posterior of an animal. It is used
to eliminate body waste such as urine. An inverted cloaca means
that the cloaca is turned inside and is not opening properly.
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Yes. A cloaca is present in marsupials and monotremes, as well
as in birds, amhibians and reptiles. Placental mammals do not have
a cloaca.