How many baby Brown deer mouses are in a litter?
A Brown deer mouse (Peromyscus megalops) usually gives birth to around 2 babies.
Each of those little ones spend around 8 days as a fetus before they are released into the wild. Upon birth, they weight 3 grams (0.01 lbs) and measure 1.3 cm (0′ 1″). They are a member of the Muridae family (genus: Peromyscus). An adult Brown deer mouse grows up to a size of 9.5 cm (0′ 4″).
To have a reference: Humans obviously usually have a litter size of one ;). Their babies are in the womb of their mother for 280 days (40 weeks) and reach an average size of 1.65m (5′ 5″). They weight in at 62 kg (137 lbs), which is obviously highly individual, and reach an average age of 75 years.
The brown deer mouse (Peromyscus megalops) is a species of rodent in the family Cricetidae found only in Mexico.
Other animals of the family Muridae
Brown deer mouse is a member of the Muridae, as are these animals:
- Oreoryzomys weighting only 60 grams
- Olive grass mouse weighting only 39 grams
- Delany’s mouse with 3 babies per pregnancy
- Mayor’s mouse with 2 babies per pregnancy
- Guatemalan vole weighting only 42 grams
- White-bellied Luzon tree rat raching a size of 18.5 cm (0′ 8″)
- Gorongoza gerbil weighting only 119 grams
- Ammodile weighting only 50 grams
- Pinyon mouse with 3 babies per pregnancy
- Norway lemming with 5 babies per pregnancy
Animals that share a litter size with Brown deer mouse
Those animals also give birth to 2 babies at once:
- Panamint kangaroo rat
- New Guinean jumping mouse
- Niobe’s shrew
- Eastern chestnut mouse
- Common echymipera
- Mayor’s mouse
- Serval
- Jungle palm squirrel
- Littledale’s whistling rat
- Common genet
Animals with the same weight as a Brown deer mouse
What other animals weight around 66 grams (0.15 lbs)?
- Julia Creek dunnart weighting 55 grams
- Underwood’s bonneted bat weighting 58 grams
- Issel’s groove-toothed swamp rat weighting 60 grams
- Heermann’s kangaroo rat weighting 63 grams
- One-striped opossum weighting 55 grams
- Bushveld gerbil weighting 73 grams
- Puebla deer mouse weighting 59 grams
- Oecomys superans weighting 73 grams
- Marsh rice rat weighting 53 grams
- Ladew’s Oldfield mouse weighting 77 grams