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Mar 13, 2023 · A female mouse can have 5-10 litters per year. Baby mice leave their mothers after 21 days, and can start having babies of their own after just 2 months. Since mice live about 1-3 years, a single mouse can produce hundreds of babies during its lifetime, which is why mice populations grow so rapidly.
A female mouse can have about 5 to 10 litters per year! So, on average, female mice will birth at least 32 to 56 pups each year (likely many more). With an average lifespan of 18 months and an average of 10 pups per litter, the average female mouse can produce more than 300 babies in her lifetime!
Not only can mice have multiple babies at once, they also can have multiple litters each year. Female house mice can have up to six pups every three weeks and can give birth to a second liter as early as 25 days after the first. In one year, they can give birth to approximately 35 babies.
In one year alone, a single female mouse can give birth up to ten separate times, and each time she does, she can produce up to eight twelve babies (six babies per litter on average). That means that just ONE mouse can produce up to 120 babies in one year (ten litters of twelve babies)!
Sep 16, 2023 · Mice typically have litters of 6-8 offspring, but this number can vary depending on the breed, age, and health of the mouse. Some breeds may produce larger litters, while others may only have a few offspring per litter.
Oct 10, 2022 · Mice have between 6 and 8 babies per litter. When we add up the total number of litters they can have per year, mice can have between 30 and 70 babies per year. Of course, you’re rarely going to see a mouse that has so many babies. Yet, even if a mouse has 30 babies in a year, it’s not a good thing.
Jan 19, 2024 · Females can mature and breed from four weeks of age, so should be separated from adult males (e.g., their father) before four weeks of age to avoid unwanted pregnancies. So, you will need to know how to tell the sexes apart.
