The anus.
The anus.
The frog's urinary bladder is located in the lowest part of the body cavity.
The genitals
The cloaca.
Body parts similar in orgin and structure?
because cloaca is connected to oviduct which is a part of reproductive system, large intestine which is a part of digestive system and the mesonephric duct/ureter which is a part of excretory system :-)
Frogs have four limbs, two hind legs and two forelegs.
homologous
The horse does have a frog on their hoof except it is not the real animal. It is a part of their body/hoof.
In zoological anatomy, a cloaca is the posterior opening that serves as the only such opening for the intestinal, reproductive, and urinary tracts of certain animal species. The word comes from Latin, and means sewer. All birds, reptiles, and amphibians possess this orifice, from which they excrete both urine and feces, unlike placental mammals, which possess two separate orifices for evacuation.A cloaca is the posterior opening in birds, reptiles, fish and monotremes (egg-laying mammals) which is the single opening for the reproductive, intestinal and urinal tracts. These animals pass their urine, faeces and eggs as well as live young through this opening. The word actually means sewer.
Skin.
The cloaca is part of the urogenital system. It is a common opening for the digestive, reproductive, and urinary systems in certain animals, such as birds, reptiles, and amphibians.