Animal Age

How old does a Merriam’s pocket mouse get? (age expectancy)

What is the maximal age a Merriam’s pocket mouse reaches?

An adult Merriam’s pocket mouse (Perognathus merriami) usually gets as old as 2.5 years.

When born, they weight 1 grams (0 lbs) and measure 1.3 cm (0′ 1″). As a member of the Heteromyidae family (genus: Perognathus), their offspring is 4 babies per pregnancy. Fully grown, they reach a bodylength of 5.8 cm (0′ 3″).

As a reference: Usually, humans get as old as 100 years, with the average being around 75 years. After being carried in the belly of their mother for 280 days (40 weeks), they grow to an average size of 1.65m (5′ 5″) and weight in at 62 kg (137 lbs), which is obviously highly individual.

Merriam’s pocket mouse (Perognathus merriami) is a species of rodent in the family Heteromyidae. It is found in northeast Mexico and New Mexico, Oklahoma and Texas in the United States. Its habitat is shortgrass prairie, desert areas with scrub and arid shrubland. The species is named to honor Clinton Hart Merriam, a biologist who first described several other members of the genus Perognathus, and first elucidated the principle of a “life zone” as a means of characterizing ecological areas with similar plant and animal communities.

Animals of the same family as a Merriam’s pocket mouse

Not really brothers and sisters, but from the same biological family (Heteromyidae):

Animals that reach the same age as Merriam’s pocket mouse

With an average age of 2.5 years, Merriam’s pocket mouse are in good companionship of the following animals:

Animals with the same number of babies Merriam’s pocket mouse

The same number of babies at once (4) are born by:

Weighting as much as Merriam’s pocket mouse

A fully grown Merriam’s pocket mouse reaches around 6 grams (0.01 lbs). So do these animals:

Animals as big as a Merriam’s pocket mouse

Those animals grow as big as a Merriam’s pocket mouse: