Behaviour
Brush-furred mice are solitary and are reported to fight when placed together. This may contribute to the wounds found on individuals. A brush-furred mouse was recorded to have lived for over 3 years in captivity.
Allopatric speciation appears to have played an important role in shaping the evolution of this genus. Research conducted on the group suggests that isolated species exist a relatively short distance away from one another. Gene flow is either absent or greatly restricted among these isolated pockets. This has led to differences detectable by karyotype, allozymes, and DNA sequencing. The number of recognized species in this genus has increased in recent years and is probably still not representative of the true diversity of this group.
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