Litter Size

How many babies does a European water vole have at once? (litter size)

How many baby European water voles are in a litter?

A European water vole (Arvicola amphibius) usually gives birth to around 4 babies.With 3 litters per year, that sums up to a yearly offspring of 12 babies.

Each of those little ones spend around 21 days as a fetus before they are released into the wild. Upon birth, they weight 5 grams (0.01 lbs) and measure 1.7 cm (0′ 1″). They are a member of the Cricetidae family (genus: Arvicola). An adult European water vole grows up to a size of 19.3 cm (0′ 8″).

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 European water vole is 4

The European water vole or northern water vole (Arvicola amphibius, included in synonymy: A. terrestris), is a semi-aquatic rodent. It is often informally called the water rat, though it only superficially resembles a true rat. Water voles have rounder noses than rats, deep brown fur, chubby faces and short fuzzy ears; unlike rats their tails, paws and ears are covered with hair.In the wild, on average, water voles only live about five months. Maximum longevity in captivity is two and a half years.

Other animals of the family Cricetidae

European water vole is a member of the Cricetidae, as are these animals:

Animals that share a litter size with European water vole

Those animals also give birth to 4 babies at once:

Animals that get as old as a European water vole

Other animals that usually reach the age of 5 years:

Animals with the same weight as a European water vole

What other animals weight around 120 grams (0.26 lbs)?

Animals with the same size as a European water vole

Also reaching around 19.3 cm (0′ 8″) in size do these animals: