Litter Size

How many babies does a Water vole (North America) have at once? (litter size)

How many baby Water vole (North America)s are in a litter?

A Water vole (North America) (Microtus richardsoni) usually gives birth to around 5 babies.With 2 litters per year, that sums up to a yearly offspring of 10 babies.

Each of those little ones spend around 22 days as a fetus before they are released into the wild. Upon birth, they weight 5 grams (0.01 lbs) and measure 3.2 cm (0′ 2″). They are a member of the Muridae family (genus: Microtus). An adult Water vole (North America) grows up to a size of 15.4 cm (0′ 7″).

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 average litter size of a Water vole (North America) is 5

The water vole (Microtus richardsoni) is the largest North American vole. It is found in the northwestern United States and southern parts of western Canada. This animal has been historically considered a member of genus Arvicola, but molecular evidence demonstrates that it is more closely related to North American Microtus species. Water voles are on the USDA Forest Service Region 2 sensitive species list because they maintain very small populations and there is high concern that their required habitat may be declining.These animals have gray-brown or red-brown fur with gray under parts. Their large hind feet help make them excellent swimmers, and they are found in alpine or semi-alpine meadows near water. They feed on grasses, leaves, roots and seeds, also eating small invertebrates. Water voles dig burrows that are connected to water sources, and are considered a semi-aquatic species.They are active year-round, tunneling through snow during the winter. Their burrows often have entrances at the water’s edge or under water, and they usually live in colonies of 8-40 individuals along the waterway.

Other animals of the family Muridae

Water vole (North America) is a member of the Muridae, as are these animals:

Animals that share a litter size with Water vole (North America)

Those animals also give birth to 5 babies at once:

Animals that get as old as a Water vole (North America)

Other animals that usually reach the age of 0.75 years:

Animals with the same weight as a Water vole (North America)

What other animals weight around 92 grams (0.2 lbs)?

Animals with the same size as a Water vole (North America)

Also reaching around 15.4 cm (0′ 7″) in size do these animals: