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Animal Size

Western harvest mouse size: How big do they get?

How big does a Western harvest mouse get? Here is an overview over the average adult age:

A grown Western harvest mouse (Reithrodontomys megalotis) reaches an average size of 6.9 cm (0′ 3″).

When born, they have an average size of 0 cm (0′ 0″). During their lifetime of about 1.5 years, they grow from 1 grams (0 lbs) to 10 grams (0.02 lbs). Talking about reproduction, Western harvest mouses have 4 babies about 4 times per year. The Western harvest mouse (genus: Reithrodontomys) 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 Western harvest mouse is  (0' 3

The western harvest mouse (Reithrodontomys megalotis) is a small neotomine mouse native to most of the western United States. Many authorities consider the endangered salt marsh harvest mouse to be a subspecies, but the two are now usually treated separately.

Animals of the same family as a Western harvest mouse

We found other animals of the Muridae family:

Animals with the same size as a Western harvest mouse

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

Animals with the same litter size as a Western harvest mouse

Here is a list of animals that have the same number of babies per litter (4) as a Western harvest mouse:

Animals with the same life expectancy as a Western harvest mouse

Completely different animals, but becoming as old as a Western harvest mouse:

Animals with the same weight as a Western harvest mouse

As a comparison, here are some other animals that weight as much as the Reithrodontomys megalotis: