Like primates, marsupials are a type of mammal. One thing all members of this family have in common is a pouch.

The most famous marsupial is the kangaroo, but there are many others, such as wallabies, opossums, koalas, and wombats. What makes marsupials different from primates or rodents (who are also mammals) is that the mothers have pouches to hold their young. This is because when marsupial babies are born, they're not quite ready for the world, so the pouch gives them a chance to grow and be safe before having to live on their own. When you think marsupial, think "pouch."

Definitions of marsupial
  1. noun
    mammals of which the females have a pouch (the marsupium) containing the teats where the young are fed and carried
    synonyms: pouched mammal
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    opossum, possum
    nocturnal arboreal marsupial having a naked prehensile tail found from southern North America to northern South America
    opossum rat
    terrestrial marsupials of southern South America that resemble shrews
    any of various agile ratlike terrestrial marsupials of Australia and adjacent islands; insectivorous and herbivorous
    any of several herbivorous leaping marsupials of Australia and New Guinea having large powerful hind legs and a long thick tail
    opossum, phalanger, possum
    small furry Australian arboreal marsupials having long usually prehensile tails
    burrowing herbivorous Australian marsupials about the size of a badger
    dasyurid, dasyurid marsupial
    small carnivorous nocturnal marsupials of Australia and Tasmania
    Notoryctus typhlops, marsupial mole, pouched mole
    small burrowing Australian marsupial that resembles a mole
    Didelphis marsupialis, Didelphis virginiana, common opossum
    omnivorous opossum of the eastern United States; noted for feigning death when in danger; esteemed as food in some areas; considered same species as the crab-eating opossum of South America
    crab-eating opossum
    South American opossum
    Macrotis lagotis, bilby, rabbit bandicoot, rabbit-eared bandicoot
    bandicoot with leathery ears like a rabbit
    Macropus giganteus, giant kangaroo, great grey kangaroo
    very large greyish-brown Australian kangaroo formerly abundant in open wooded areas
    brush kangaroo, wallaby
    any of various small or medium-sized kangaroos; often brightly colored
    Hypsiprymnodon moschatus, musk kangaroo
    small kangaroo of northeastern Australia
    kangaroo rat, rat kangaroo
    any of several rabbit-sized ratlike Australian kangaroos
    woolly-haired monkey-like arboreal marsupial of New Guinea and northern Australia
    Trichosurus vulpecula, brush-tailed phalanger
    bushy-tailed phalanger
    flying opossum, flying phalanger, flying squirrel
    nocturnal phalangers that move with gliding leaps using parachute-like folds of skin along the sides of the body
    Phascolarctos cinereus, kangaroo bear, koala, koala bear, native bear
    sluggish tailless Australian arboreal marsupial with grey furry ears and coat; feeds on eucalyptus leaves and bark
    any of several more or less arboreal marsupials somewhat resembling martens
    Tasmanian tiger, Tasmanian wolf, Thylacinus cynocephalus, thylacine
    rare doglike carnivorous marsupial of Tasmania having stripes on its back; probably extinct
    Sarcophilus hariisi, Tasmanian devil, ursine dasyure
    small ferocious carnivorous marsupial having a mostly black coat and long tail
    marsupial mouse, marsupial rat, pouched mouse
    any of numerous small sharp-nosed insectivorous marsupials superficially resembling mice or rats
    Myrmecobius fasciatus, anteater, banded anteater, numbat
    small Australian marsupial having long snout and strong claws for feeding on termites; nearly extinct
    type of:
    primitive pouched mammals found mainly in Australia and the Americas
  2. adjective
    of or relating to the marsupials
    marsupial animals”
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