How many baby North American brown lemmings are in a litter?
A North American brown lemming (Lemmus trimucronatus) usually gives birth to around 6 babies.
Each of those little ones spend around 20 days as a fetus before they are released into the wild. Upon birth, they weight 12 grams (0.03 lbs) and measure 6 cm (0′ 3″). They are a member of the Cricetidae family (genus: Lemmus). An adult North American brown lemming grows up to a size of 14 cm (0′ 6″).
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 North American brown lemming (Lemmus trimucronatus) is a small North American lemming. Originally called the Siberian brown lemming (Lemmus sibiricus) they were later formed into two distinct species.
Other animals of the family Cricetidae
North American brown lemming is a member of the Cricetidae, as are these animals:
- Allegheny woodrat with 2 babies per pregnancy
- Hairy-tailed bolo mouse with 4 babies per pregnancy
- Caatinga vesper mouse weighting only 39 grams
- Juniper vole with 3 babies per pregnancy
- Abrothrix jelskii weighting only 34 grams
- Buenos Aires leaf-eared mouse weighting only 42 grams
- Grey red-backed vole with 5 babies per pregnancy
- Southern vole weighting only 35 grams
- Western red-backed vole with 3 babies per pregnancy
- Tien Shan red-backed vole with 4 babies per pregnancy
Animals that share a litter size with North American brown lemming
Those animals also give birth to 6 babies at once:
- Roborovski dwarf hamster
- Arctic shrew
- Northern quoll
- Siberian weasel
- Siberian brown lemming
- Perote ground squirrel
- Round-tailed ground squirrel
- Little red kaluta
- Cinereus shrew
- Alaskan hare
Animals with the same weight as a North American brown lemming
What other animals weight around 69 grams (0.15 lbs)?
- Ash-colored Oldfield mouse weighting 77 grams
- Garlepp’s mouse weighting 59 grams
- Slender squirrel weighting 74 grams
- Long-nosed mosaic-tailed rat weighting 82 grams
- Big deer mouse weighting 71 grams
- Ungava collared lemming weighting 57 grams
- Moncton’s mosaic-tailed rat weighting 80 grams
- Colorado chipmunk weighting 57 grams
- Hylaeamys yunganus weighting 60 grams
- Hylaeamys megacephalus weighting 57 grams