Litter Size

How many babies does a House mouse have at once? (litter size)

How many baby House mouses are in a litter?

A House mouse (Mus musculus) usually gives birth to around 5 babies.With 4 litters per year, that sums up to a yearly offspring of 20 babies.

Each of those little ones spend around 19 days as a fetus before they are released into the wild. Upon birth, they weight 1 grams (0 lbs) and measure 2.1 cm (0′ 1″). They are a member of the Muridae family (genus: Mus). An adult House mouse grows up to a size of 6.1 cm (0′ 3″).

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 House mouse is 5

The house mouse (Mus musculus) is a small mammal of the order Rodentia, characteristically having a pointed snout, large rounded ears, and a long and hairy tail. It is one of the most abundant species of the genus Mus. Although a wild animal, the house mouse has benefited significantly from associating with human habitation to the point that truly wild populations are significantly less common than the semi-tame populations near human activity.The house mouse has been domesticated as the pet or fancy mouse, and as the laboratory mouse, which is one of the most important model organisms in biology and medicine. The complete mouse reference genome was sequenced in 2002.

Other animals of the family Muridae

House mouse is a member of the Muridae, as are these animals:

Animals that share a litter size with House mouse

Those animals also give birth to 5 babies at once:

Animals that get as old as a House mouse

Other animals that usually reach the age of 6 years:

Animals with the same weight as a House mouse

What other animals weight around 19 grams (0.04 lbs)?