Litter Size

How many babies does a Black-eared mouse have at once? (litter size)

How many baby Black-eared mouses are in a litter?

A Black-eared mouse (Peromyscus melanotis) usually gives birth to around 3 babies.With 7 litters per year, that sums up to a yearly offspring of 21 babies.

Each of those little ones spend around 17 days as a fetus before they are released into the wild. Upon birth, they weight 1 grams (0 lbs) and measure 1.3 cm (0′ 1″). They are a member of the Muridae family (genus: Peromyscus). An adult Black-eared mouse grows up to a size of 12.5 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 black-eared mouse, or black-eared deer mouse, (Peromyscus melanotis) is a species of rodent in the family Cricetidae, native to North America.

Other animals of the family Muridae

Black-eared mouse is a member of the Muridae, as are these animals:

Animals that share a litter size with Black-eared mouse

Those animals also give birth to 3 babies at once:

Animals with the same weight as a Black-eared mouse

What other animals weight around 39 grams (0.09 lbs)?