How many baby Northern short-tailed shrews are in a litter?
A Northern short-tailed shrew (Blarina brevicauda) usually gives birth to around 5 babies.With 3 litters per year, that sums up to a yearly offspring of 15 babies.
Each of those little ones spend around 20 days as a fetus before they are released into the wild. Upon birth, they weight 23.38 kg (51.54 lbs) and measure 5.2 cm (0′ 3″). They are a member of the Soricidae family (genus: Blarina). An adult Northern short-tailed shrew grows up to a size of 12.1 cm (0′ 5″).
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 northern short-tailed shrew (Blarina brevicauda) is the largest shrew in the genus Blarina, and occurs in the northeastern region of North America. It is a semifossorial, highly active, and voracious insectivore and is present in a variety of habitats like broadleaved and pine forests among shrubs and hedges as well as grassy river banks. It is notable in that it is one of the few venomous mammals. The specific epithet, brevicauda, is a combination of the Latin brevis and cauda, meaning “short tail”.
Other animals of the family Soricidae
Northern short-tailed shrew is a member of the Soricidae, as are these animals:
- Large-eared gray shrew weighting only 5 grams
- Ussuri shrew weighting only 15 grams
- Ruwenzori shrew weighting only 18 grams
- Nigerian shrew weighting only 23 grams
- Saint Lawrence Island shrew weighting only 6 grams
- Climbing shrew with 1 babies per pregnancy
- Somali shrew weighting only 11 grams
- Luzon shrew weighting only 10 grams
- Dent’s shrew weighting only 4 grams
- Transcaucasian water shrew raching a size of 8.6 cm (0′ 4″)
Animals that share a litter size with Northern short-tailed shrew
Those animals also give birth to 5 babies at once:
- Eurasian harvest mouse
- Dusky slender opossum
- Merriam’s shrew
- Southern red-backed vole
- Slender shrew
- Dusky field rat
- Piebald shrew
- Pygmy rabbit
- Kultarr
- Long-clawed shrew
Animals that get as old as a Northern short-tailed shrew
Other animals that usually reach the age of 2.75 years:
- White-footed mouse with 3.17 years
- Sandstone false antechinus with 3 years
- North African elephant shrew with 3 years
- Star-nosed mole with 3 years
- Golden mouse with 2.5 years
- Highland streaked tenrec with 2.58 years
- Lutrine opossum with 3 years
- Lowland streaked tenrec with 2.67 years
- Brown antechinus with 3 years
- Heermann’s kangaroo rat with 2.33 years
Animals with the same weight as a Northern short-tailed shrew
What other animals weight around 18 grams (0.04 lbs)?
- Desert long-eared bat weighting 21 grams
- Niobe’s shrew weighting 16 grams
- Lesser mouse-eared bat weighting 21 grams
- African smoky mouse weighting 17 grams
- Davies’s big-eared bat weighting 18 grams
- Gerbil mouse weighting 17 grams
- Brown mastiff bat weighting 15 grams
- Small-toothed harvest mouse weighting 20 grams
- Lesser short-tailed gerbil weighting 17 grams
- Fischer’s pygmy fruit bat weighting 18 grams
Animals with the same size as a Northern short-tailed shrew
Also reaching around 12.1 cm (0′ 5″) in size do these animals:
- Moncton’s mosaic-tailed rat gets as big as 14.2 cm (0′ 6″)
- Mindoro climbing rat gets as big as 12.3 cm (0′ 5″)
- White-footed vole gets as big as 10.3 cm (0′ 5″)
- Gleaning mouse gets as big as 10.2 cm (0′ 5″)
- Swift fruit bat gets as big as 10.4 cm (0′ 5″)
- Texas kangaroo rat gets as big as 11.9 cm (0′ 5″)
- European mole gets as big as 12.9 cm (0′ 6″)
- Northern red-backed vole gets as big as 10.9 cm (0′ 5″)
- Painted spiny pocket mouse gets as big as 11.4 cm (0′ 5″)
- Long-tailed hopping mouse gets as big as 13.8 cm (0′ 6″)