It is hard to guess what a Serra do Mar grass mouse weights. But we have the answer:
An adult Serra do Mar grass mouse (Akodon serrensis) on average weights 28 grams (0.06 lbs).
The Serra do Mar grass mouse is from the family Muridae (genus: Akodon). When reaching adult age, they grow up to 9.6 cm (0′ 4″).
As a reference: An average human weights in at 62 kg (137 lbs) and reaches an average size of 1.65m (5′ 5″). Humans spend 280 days (40 weeks) in the womb of their mother and reach around 75 years of age.
The Serra do Mar grass mouse or Cerrado grass mouse (Akodon serrensis) is a rodent species from South America. It is found in Brazil.Pardiñas et al. (2016) transferred this species from the genus Akodon to the separate akodontine genus Castoria. The authors also considered A. serrensis to be likely junior synonym of the species Habrothrix angustidens Winge (1887), described on the basis of fossil (probably late Pleistocene) remains recovered from five cave deposits in the area of Lagoa Santa (Minas Gerais, Brazil), which is the type species of the genus Castoria.
Animals of the same family as a Serra do Mar grass mouse
We found other animals of the Muridae family:
- Holochilus chacarius with a weight of 204 grams
- Woosnam’s broad-headed mouse with a weight of 54 grams
- Pygmy gerbil with a weight of 8 grams
- Zempoaltepec with a weight of 58 grams
- Ash-colored Oldfield mouse with a weight of 77 grams
- Marmoset rat with a weight of 70 grams
- Giant bushy-tailed cloud rat with a size of 37.1 cm (1′ 3″)
- Akodon spegazzinii with a weight of 28 grams
- El Carrizo deer mouse with a weight of 40 grams
- Abyssinian grass rat with a weight of 73 grams
Animals with the same weight as a Serra do Mar grass mouse
As a comparison, here are some other animals that weight as much as the Akodon serrensis:
- Lesser mouse-eared bat bringing 23 grams to the scale
- Kemp’s grass mouse bringing 26 grams to the scale
- Northern grasshopper mouse bringing 27 grams to the scale
- Oligoryzomys fulvescens bringing 25 grams to the scale
- Oligoryzomys griseolus bringing 25 grams to the scale
- Panama slender opossum bringing 29 grams to the scale
- Brown antechinus bringing 29 grams to the scale
- Dusky caenolestid bringing 29 grams to the scale
- Incan caenolestid bringing 23 grams to the scale
- White-eared pocket mouse bringing 24 grams to the scale
Animals with the same size as a Serra do Mar grass mouse
Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Serra do Mar grass mouse:
- Mauritian tomb bat with a size of 8.4 cm (0′ 4″)
- Short-snouted elephant shrew with a size of 11.5 cm (0′ 5″)
- Mongolian gerbil with a size of 11.2 cm (0′ 5″)
- Olive grass mouse with a size of 9.6 cm (0′ 4″)
- Sandy inland mouse with a size of 8.2 cm (0′ 4″)
- Pallas’s pika with a size of 8.2 cm (0′ 4″)
- Woodford’s fruit bat with a size of 8.2 cm (0′ 4″)
- Northern groove-toothed shrew mouse with a size of 8.1 cm (0′ 4″)
- Black-tailed dasyure with a size of 11 cm (0′ 5″)
- Salim Ali’s fruit bat with a size of 10.6 cm (0′ 5″)