VU

Brush-tailed Rabbit-rat

Conilurus penicillatus

DecliningVUAU

Overview

A medium-sized nocturnal rodent, the brush-tailed rabbit-rat is characterized by soft grey-brown fur, large ears, and a distinctive bushy, white-tipped tail. It forages on the ground and in low vegetation for seeds, fruit, and green shoots, sheltering by day in tree hollows, hollow logs, or dense grass tussocks. As a seed disperser and prey item for owls, quolls, and snakes, it plays a modest but meaningful role in maintaining the structure of the savanna woodlands it inhabits.

Historically distributed across much of northern Australia, the species is now restricted to a fragmented range across the Northern Territory's coastal regions and several offshore islands, including the Tiwi Islands and parts of the Kimberley in Western Australia, with populations also recorded in Papua New Guinea. It occupies tropical savanna woodland, coastal monsoon forest, and adjacent vegetated dune and shoreline habitats.

The species' decline is driven primarily by altered fire regimes—particularly frequent, extensive late dry-season wildfires that remove the understorey shelter and food resources it depends on—and by predation from introduced feral cats. These pressures have caused local extinctions across much of its former mainland range, with island populations now considered strongholds.

Conservation efforts include strategic early dry-season burning programs designed to create fine-grained fire mosaics, feral cat control and monitoring on key islands, and population surveys to track distribution and abundance. Some island populations, notably on the Tiwi Islands, remain a focus of targeted management due to their relative security from mainland threats.

The population trend remains downward, and without sustained fire management and effective control of introduced predators, further contraction of the species' range is likely, particularly on the Australian mainland.

The Brush-tailed Rabbit-rat is mainly threatened by frequent and intense wildfires that destroy the grasses and shrubs it needs for food and shelter, as well as predation by introduced animals like feral cats. These two dangers often combine, since fires strip away the ground cover that would otherwise help the animals hide from predators. Both threats are ongoing and appear to be continuing at a steady, persistent level rather than clearly increasing or decreasing.

Threat summary

Habitat

Forest· majorMarine coastal/supratidal· majorDesert· major

Frequently asked questions

Why is Brush-tailed Rabbit-rat classified as Vulnerable?
Brush-tailed Rabbit-rat is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. The Brush-tailed Rabbit-rat is mainly threatened by frequent and intense wildfires that destroy the grasses and shrubs it needs for food and shelter, as well as predation by introduced animals like feral cats. These two dangers often combine, since fires strip away the ground cover that would otherwise help the animals hide from predators. Both threats are ongoing and appear to be continuing at a steady, persistent level rather than clearly increasing or decreasing.
Where does Brush-tailed Rabbit-rat live?
Brush-tailed Rabbit-rat occurs in Australia, and Papua New Guinea. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Brush-tailed Rabbit-rat?
The main threats to Brush-tailed Rabbit-rat are 7.1, and 8.1. The full IUCN-classified threat record for this species is detailed on the species page.

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