Do frogs have a placenta?Kangaroos? rabbits?

I’m a very stupid person but this is completely serious and i need help… Please do frogs,kangaroos,or rabbits have a placenta??

6 Answers

  • Placentas are a unique feature of a group called the ‘eutheria’ or ‘placentals’. This includes all mammals EXCEPT for the monotremes (platypus and echidnas) which lay eggs instead, and the marsupials (including kangaroos).

    In short:

    Frogs are amphibians, not even mammals at all. They lay eggs so have no placenta.

    Kangaroos are marsupials. Their embryos develop in a kind of yolk sac while in the uterus, and are birthed very early before developing in the mother’s pouch. So they have no placenta.

    Rabbits are eutherians. They do have a placenta.

  • Do Kangaroos Have A Placenta

  • Er, Thundercat, *Placental* Mammals have a placenta. This means frogs (amphibians) and Kangaroos (Marsupials) do not. That leaves your answer, of those, only rabbits have a placenta.

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    RE:

    Do frogs have a placenta?Kangaroos? rabbits?

    I’m a very stupid person but this is completely serious and i need help… Please do frogs,kangaroos,or rabbits have a placenta??

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  • Mammals do. A frog is not a mammal.

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