Litter Size

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

How many baby Altai birch mouses are in a litter?

A Altai birch mouse (Sicista napaea) usually gives birth to around 3 babies.With 1 litters per year, that sums up to a yearly offspring of 3 babies.

Each of those little ones spend around 20 days as a fetus before they are released into the wild. Upon birth, they weight 24 grams (0.05 lbs) and measure 1.6 cm (0′ 1″). They are a member of the Dipodidae family (genus: Sicista). An adult Altai birch mouse grows up to a size of 18.5 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 Altai birch mouse (Sicista napaea) is a species of rodent in the family Dipodidae. It is native to Russia and Kazakhstan.

Other animals of the family Dipodidae

Altai birch mouse is a member of the Dipodidae, as are these animals:

Animals that share a litter size with Altai birch mouse

Those animals also give birth to 3 babies at once:

Animals with the same weight as a Altai birch mouse

What other animals weight around 10 grams (0.02 lbs)?