How big does a Salt marsh harvest mouse get? Here is an overview over the average adult age:
A grown Salt marsh harvest mouse (Reithrodontomys raviventris) reaches an average size of 7 cm (0′ 3″).
When born, they have an average size of 0 cm (0′ 0″). Usually, they reach an age of 2.58 years. A full-grown exemplary reaches roughly 10 grams (0.02 lbs). Talking about reproduction, Salt marsh harvest mouses have 3 babies about 1 times per year. The Salt marsh 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 salt marsh harvest mouse (Reithrodontomys raviventris), also known as the red-bellied harvest mouse and sometimes called the saltmarsh harvest mouse, is an endangered rodent endemic to the San Francisco Bay Area salt marshes in CA. There are two distinct subspecies, both endangered and listed together on federal and state endangered species lists. The northern subspecies (Reithrodontomys raviventris halicoetes) is lighter in color and inhabits the northern marshes of the bay, and the southern subspecies (Reithrodontomys raviventris raviventris) lives in the East and South Bay marshes. They are both quite similar in appearance to their congener species, the [Western harvest mouse, R. megalotis], to which they are not closely related. Genetic studies of the northern subspecies have revealed that the salt marsh harvest mouse is most closely related to the plains harvest mouse, R. montanus, (), which occurs now in the Midwest]. Its endangered designation is due to its limited range, historic decline in population and continuing threat of habitat loss due to development encroachment at the perimeter of San Francisco Bay.
Animals of the same family as a Salt marsh harvest mouse
We found other animals of the Muridae family:
- Ruschi’s rat with a weight of 63 grams
- False water rat with a size of 11.3 cm (0′ 5″)
- Tristram’s jird with 5 babies per litter
- Defua rat with 1 babies per litter
- Shaw’s jird with 5 babies per litter
- Grant’s rock mouse with a weight of 40 grams
- Winter white dwarf hamster with a size of 7.9 cm (0′ 4″)
- Cauca climbing mouse with a weight of 89 grams
- Mexican woodrat with a size of 18.4 cm (0′ 8″)
- Target rat with 2 babies per litter
Animals with the same size as a Salt marsh harvest mouse
Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Salt marsh harvest mouse:
- Nelson’s pocket mouse with a size of 7.9 cm (0′ 4″)
- Moss-forest blossom bat with a size of 6.9 cm (0′ 3″)
- Velvety free-tailed bat with a size of 6 cm (0′ 3″)
- Drouhard’s shrew tenrec with a size of 7.3 cm (0′ 3″)
- Lesser tube-nosed fruit bat with a size of 7.7 cm (0′ 4″)
- San Diego pocket mouse with a size of 8.3 cm (0′ 4″)
- Red fruit bat with a size of 6.1 cm (0′ 3″)
- Western harvest mouse with a size of 6.9 cm (0′ 3″)
- Gansu shrew with a size of 8 cm (0′ 4″)
- Northern groove-toothed shrew mouse with a size of 8.1 cm (0′ 4″)
Animals with the same litter size as a Salt marsh harvest mouse
Here is a list of animals that have the same number of babies per litter (3) as a Salt marsh harvest mouse:
- Kemp’s gerbil
- Capybara
- Greater Egyptian gerbil
- True’s shrew mole
- Hairy harvest mouse
- Salvin’s spiny pocket mouse
- San Diego pocket mouse
- Asiatic long-tailed climbing mouse
- Rakali
- Greater hedgehog tenrec
Animals with the same life expectancy as a Salt marsh harvest mouse
Completely different animals, but becoming as old as a Salt marsh harvest mouse:
- McIlhenny’s four-eyed opossum with an average maximal age of 2.25 years
- Tome’s spiny rat with an average maximal age of 2.58 years
- Australian swamp rat with an average maximal age of 2.42 years
- Red hocicudo with an average maximal age of 2.58 years
- Four-striped grass mouse with an average maximal age of 2.83 years
- Lutrine opossum with an average maximal age of 3 years
- Fawn antechinus with an average maximal age of 2.25 years
- Vagrant shrew with an average maximal age of 2.08 years
- Northern quoll with an average maximal age of 2.83 years
- Japanese mountain mole with an average maximal age of 3 years
Animals with the same weight as a Salt marsh harvest mouse
As a comparison, here are some other animals that weight as much as the Reithrodontomys raviventris:
- Glen’s wattled bat bringing 10 grams to the scale
- Gray-bellied pygmy mouse bringing 12 grams to the scale
- Bicolored roundleaf bat bringing 8 grams to the scale
- Silver fruit-eating bat bringing 12 grams to the scale
- Silvered bat bringing 9 grams to the scale
- Pygmy round-eared bat bringing 9 grams to the scale
- Darling’s horseshoe bat bringing 8 grams to the scale
- Long-legged myotis bringing 8 grams to the scale
- Baird’s shrew bringing 8 grams to the scale
- Allen’s big-eared bat bringing 12 grams to the scale