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  3. Fat-tailed Dunnart

One of the 6 mice on WAnimals

Mammals · Dasyuromorphia · Dasyuridae

Fat-tailed Dunnart

Sminthopsis crassicaudata

Least Concern

The species is abundant and widely distributed; it faces no significant short-term risk.

Spotted something wrong?

The fat-tailed dunnart is a tiny carnivorous marsupial of the arid Australian interior, the size of a mouse but with the dentition of a predator. It stores fat in its tail, which thickens noticeably in times of plenty and thins when food is scarce. It hunts insects, spiders and small vertebrates. In cold weather or lean times it enters daily torpor, lowering its body temperature for several hours each day.

Weight

10 g – 20 g

Size

6 cm – 9 cm

Life expectancy

3 years

Diet

Insectivore

Feeds mainly on insects and other invertebrates.

Activity

Nocturnal

Active mainly at night.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

Sighting difficulty

Easy

DesertGrassland
1countries9parks5same family

Fun facts

  • GeneralIt stores fat in its tail and goes into daily torpor to save energy.
  • Its tail works as a larder: it swells until it looks like a carrot when food is plentiful and is used up during lean spells, a reserve visible at a glance.
  • It enters torpor almost every day in winter: it drops its body temperature for a few hours before dawn and starts up again with the sun, saving an enormous share of its energy budget.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (mammal)
Habitat and environment
Arid grassland, saltbush scrub and farmland of inland Australia
Sexual maturity
3.8 months
Gestation / incubation
14 days
Litter / clutch size
7

Sources consulted: https://www.iucnredlist.org/ | https://animaldiversity.org/ | https://es.wikipedia.org/

Where to find it

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The pins mark the parks where its presence is documented.

Where to see it

Parks and dive sites where this species has been documented.

Related species

Other species in the catalogue with the most in common with Fat-tailed Dunnart — same habitat, park, country, tags or family.

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Based on what we already know about fat-tailed dunnart.

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See full glossary
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See its range on the interactive map→
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CountriesAustralia
ParksUluru-Kata TjutaAustralia
TagsInsectivore
Insectivore
Nocturnal
Solitary
Desert
Grassland
Mammal
Australia