Litter Size

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

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

A Black-tailed mouse (Peromyscus melanurus) usually gives birth to around 2 babies.

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-tailed 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-tailed mouse (Peromyscus melanurus) is a species of rodent in the family Cricetidae endemicto Mexico.

Other animals of the family Muridae

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

Animals that share a litter size with Black-tailed mouse

Those animals also give birth to 2 babies at once:

Animals with the same weight as a Black-tailed mouse

What other animals weight around 40 grams (0.09 lbs)?