Where does a baby mammal develop?

Placental – animals in which the embryo develops in a special female organ – the uterus. For example: a cow, a person, a dog, a cat.
Marsupials are animals that give birth to a weak calf, so for a long time the female carries it out in a bag. Example: kangaroo, possum, koala, possum – honey badger.
Monotremes are animals that lay eggs, but the young are fed with milk. For example: platypus, echidna.



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