Bishop's slender opossum (''Marmosops bishopi'') is a small,

arboreal Arboreal locomotion is the Animal locomotion, locomotion of animals in trees. In habitats in which trees are present, animals have evolved to move in them. Some animals may scale trees only occasionally, but others are exclusively arboreal. Th ...

marsupial opossum native to Brazil, Peru, and Bolivia. It somewhat resembles a placental rat or shrew.

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Further reading