and develop to a juvenile stage.

Variations

The marsupial pouch shows substantial morphological variation across species, including differences in opening direction, enclosure, and teat arrangement. These different forms are often associated with ecological behavior such as climbing or burrowing. The two kinds that are distinguishable (on the front or belly): opening towards the head and extending the cavity under the skin towards the tail (forward, or up) or opening towards the tail and extending towards the front legs (to the

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