What is the meaning of the word "nail-tailed wallaby"?

Definitions:

  1. A small to medium-sized marsupial native to Australia, named for te distinctive horny tip on the end of its tail, which resembles a nail. copy to clipboard NOUN
    • Nail-tailed wallabies are nocturnal animals, spending their days resting in dense vegetation and emerging at dusk to feed. copy to clipboard

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