The viscacha rat (Octomys mimax), or mountain viscacha rat, is a species of rodent in the family Octodontidae. It is endemic to Chile and Argentina.
It is the only living species within the genus Octomys. This diploid genus (2n = 56) may be ancestral to the two unusual tetraploid species Tympanoctomys barrerae and Pipanacoctomys aureus.
Read more about Viscacha Rat: Description, Distribution and Habitat, Behaviour
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