It is hard to guess what a Caatinga vesper mouse weights. But we have the answer:
An adult Caatinga vesper mouse (Calomys expulsus) on average weights 39 grams (0.09 lbs).
The Caatinga vesper mouse is from the family Cricetidae (genus: Calomys). When reaching adult age, they grow up to 21.1 cm (0′ 9″).
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 caatinga vesper mouse (Calomys expulsus) (also known as the caatinga laucha or rejected vesper mouse) is a rodent species in the family Cricetidae from South America. It is endemic to eastern Brazil, where it is found in open savanna (cerrado) and thorny scrub (caatinga) habitats. Its karyotype has 2n = 66 and FN = 68. It was formerly synonymized with C. callosus, but the latter has 2n = 50 and FN = 66. Karyologic analysis of C. expulsus has shown that the X chromosome is large and submetacentric while the Y chromosome is either acrocentric or submetacentric. Predators include the barn owl . Sexual dimorphism in shape and size occurs; the former is present mainly before the age of 20 days. Males are smaller before age 50 days and larger thereafter, which becomes less prominent after 200 days.
Animals of the same family as a Caatinga vesper mouse
We found other animals of the Cricetidae family:
- Blackish grass mouse with a weight of 19 grams
- Montane grass mouse with a size of 7.5 cm (0′ 3″)
- Abrothrix illuteus with a weight of 47 grams
- Blyth’s vole with 1 babies per litter
- Northern red-backed vole with a weight of 19 grams
- Brucepattersonius iheringi with a weight of 43 grams
- Big-eared woodrat with a weight of 225 grams
- Allegheny woodrat with a weight of 447 grams
- Lesser Wilfred’s mouse with a weight of 22 grams
- Smith’s vole with a weight of 34 grams
Animals with the same weight as a Caatinga vesper mouse
As a comparison, here are some other animals that weight as much as the Calomys expulsus:
- Greater Wilfred’s mouse bringing 46 grams to the scale
- Bushy-tailed hairy-footed gerbil bringing 35 grams to the scale
- Short-snouted elephant shrew bringing 45 grams to the scale
- Paraguayan fat-tailed mouse opossum bringing 34 grams to the scale
- Akodon sylvanus bringing 39 grams to the scale
- Tundra vole bringing 33 grams to the scale
- Umboi tube-nosed fruit bat bringing 41 grams to the scale
- Himalayan water shrew bringing 33 grams to the scale
- Oligoryzomys nigripes bringing 34 grams to the scale
- Fawn antechinus bringing 38 grams to the scale