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How do mammals give birth to their young?

In: Mammals [Edit categories]

Answer:

Mammals are divided into monotremes, marsupials, and placental mammals based primarily on the method of birth. Monotremes lay eggs (after carrying the egg inside the body for some time). Marsupials give birth to premature young, which must then crawl up to the nipple (which is often inside a pouch) and attach to it. They detach once they are more fully developed. Placental mammals keep their young in a full placenta (marsupials have a simpler placenta) before birth. Nutrients come to the young through the placenta and wastes leave through it. The young are connected to the placenta by the umbilical cord. The young, which are more fully developed than in marsupials, are then delivered.

First answer by MGSF. Last edit by MGSF. Contributor trust: 34 [recommend contributor ]. Question popularity: 2 [recommend question].

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Relevant answers:

Do mammals give birth to their young?
Yes - mostly.All but two types of mammals give birth to live young. The exceptions are the platypus and the echidna.
Do most mammals give birth to their young?
Most mammals give birth to their young. Only the monotremes - platypuses and echidnas - are egg-laying mammals.
Why do mammals give birth to living young?
most mammals are too big to lay eggs, because big eggs have a higher chance of getting accidentally squished
Do mammals give birth to live young?
All mammals, with the exception of the monotremes, give birth to live young. Monotremes are egg-laying mammals, and comprise just three species: platypus, short-beaked echidna and long-beaked echidna.
What mammals give birth to their young alive?
All mammals give birth to live young, except those in the Monotreme order (echidnas and platypus), which lay eggs.