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A Broad-toothed Rat. It is a medium-sized native rodent with a broad face, short tail, and stocky body, with soft, dense brown to grey fur and a dark tail.
Broad-toothed Rat (Mastacomys fuscus mordicus)
Photo: Ken Green

Description

  • The Broad-toothed Rat is a medium-sized native rodent with a broad face, short tail, and stocky body.
  • It measures 14–17 cm in head/body length and has a tail length of 10–13 cm.
  • Its fur is soft and dense, brown tinged with rufous on the dorsal side and merging to grey underneath, and it may have a green tinge due to the presence of algae.
  • The ears are small and round with tufts of hair inside, and the feet are brown above and below.
  • The lightly-haired tail is dark above, becoming slightly lighter underneath.
  • This rat has large molars, a rounded head, well-developed cheeks, and large jaw muscles.
  • The Broad-toothed Rat is mostly nocturnal and herbivorous, feeding on grasses, sedges, shrub foliage, fungi, bark, and moss.
  • Breeding occurs between October and March, with females giving birth to 1-4 young per litter, with 1-2 litters per season.
  • Sexual maturity is reached in 8-10 months, and the species lives for approximately 2-3 years.
  • The Broad-toothed Rat is currently threatened by habitat loss and fragmentation, predation by foxes and cats, and possibly climate change.

Where are they

  • The Broad-toothed Rat’s distribution is broken up across Vic, NSW and the ACT.
  • It’s found in Namadgi National Park in the ACT.
  • They prefer alpine and subalpine heaths and eucalypt woodlands, wet sclerophyll forest, grasslands and wet sedgelands from sea level to 2200m.

Conservation status

Conservation actions

Conservation actions aim to:

  • maintain and protect habitat
  • mitigate feral predator impact
  • reduce the extent and intensity of fires in their habitat
  • control feral herbivores
  • long term monitoring to establish trends
  • consider translocation if necessary, where populations are unnaturally fragmented and do not recover without assistance

Strategies and plans