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Animal Size

Plains rat size: How big do they get?

How big does a Plains rat get? Here is an overview over the average adult age:

A grown Plains rat (Pseudomys australis) reaches an average size of 12.1 cm (0′ 5″).

When born, they have an average size of 0 cm (0′ 0″). During their lifetime of about 5.58 years, they grow from 4 grams (0.01 lbs) to 53 grams (0.12 lbs). A Plains rat has 3 babies at once. The Plains rat (genus: Pseudomys) is a member of the family Muridae.

As a reference: Humans reach an average body size of 1.65m (5′ 5″) while carrying 62 kg (137 lbs). A human woman is pregnant for 280 days (40 weeks) and on average become 75 years old.

The average adult size of a Plains rat is  (0' 5

The plains rat (Pseudomys australis), also known as the plains mouse, is a conilurine rodent native to arid and semi-arid Australia. Referred to as the pallyoora or yarlie by Indigenous groups, the plains rat was once widely distributed across central Australia, including north-west New South Wales and south-west Queensland; however, habitat degradation due to grazing, introduced predators and drought have contributed to its decline. Consequently, the plains rat has been listed as ‘presumed extinct’ in New South Wales and Victoria, ‘endangered’ in the Northern Territory and Queensland and ‘vulnerable’ in Western Australia and South Australia. While recent research has indicated the presence of the plains rat in areas such as the Fowlers Gap and Strzelecki Desert regions of New South Wales and within the Diamantina National Park in Queensland, there are only five sub-populations currently recognised nationally, none of which coincide with recent discoveries of the plains rat. As the current population trend of the plains rat has been listed as ‘declining’ by the International Union for the Conservation of Nature (IUCN), the IUCN conservation status for the species is ‘vulnerable’.

Animals of the same family as a Plains rat

We found other animals of the Muridae family:

Animals with the same size as a Plains rat

Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Plains rat:

Animals with the same litter size as a Plains rat

Here is a list of animals that have the same number of babies per litter (3) as a Plains rat:

Animals with the same life expectancy as a Plains rat

Completely different animals, but becoming as old as a Plains rat:

Animals with the same weight as a Plains rat

As a comparison, here are some other animals that weight as much as the Pseudomys australis: