Are Marsupials Mammals?
Marsupials are mammals and, like all other mammals, belong to the class Mammalia. Marsupials are known as “pouched mammals” because, after being born, their young continue to develop in a special pouch in the mother’s abdomen.
Marsupials belong to the infraclass Metatheria, which is one of the three main mammal groups, the others being the egg-laying monotremes and the placental mammals.