Marsupialian refers to animals such as kangaroos, wallabies, and koalas that carry their young in a pouch. There are numerous synonyms for this term, some of which include marsupial, pouched mammal, pouch-bearing animal, kangaroo-like creature, and marsupialized. These synonyms highlight various aspects of the marsupial characteristics, such as their unique reproductive adaptations and anatomical features. Whether referring to the iconic kangaroos of Australia or the lesser-known numbats of Western Australia, marsupials are an important and fascinating group of animals with a rich diversity of species and a wide range of ecological roles.