IUCN threat status:

Vulnerable (VU)

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Biology

Outside of the breeding season, the Shark Bay mouse does not seem to use burrows as much as other Pseudomys species, but rather builds tunnels and runways amongst vegetation, which it uses as daytime refuges. The mice on Doole Island have been observed using hollows in mangrove trees, as well as sites among rocks for daytime refuges. Little is known about the diet of this nocturnal species, although it is believed to comprise flowers, leaves and insects, and individuals have been recorded eating spiders (3). The Shark Bay mouse is apparently solitary (2), and most information on its reproductive behaviour has come from observations of captive animals (3). Breeding on Bernier Island primarily takes place between May and November and gestation lasts around 28 days (2) (3). Litters of up to five young have been recorded in captivity, although around three is thought to be more common (2) (3). Young are born hairless but are furred by 11 days, although the eyes remain closed for a further four (2) (3). Young are weaned by four weeks and obtain full adult size at around 100 days. Specimens on Bernier Island have lived for at least two years (3).

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Source: ARKive

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