What do you do if you find baby mice? Call a wildlife rehabilitator.
If you find a baby wild mouse (or an empty nest of baby mice), call your local wildlife rehabilitation office. Transferring the baby mouse to a wildlife professional is the best chance it has for survival.
How long do baby mice stay in the nest? Baby mice grow up very quickly. After just six days, they have fur and can move and squeak. After 18 days, they are ready to leave the nest. Female mice can start having babies when they are just six weeks old. They can produce 10 litters every year, with up to 12 babies in each litter.
How many babies does a house mouse have? 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.
How long do mice carry babies? Mouse Reproduction
Mice are prolific breeders with a short gestation period, two factors that combine to make the rodents hard to control. Mouse babies are born around 20 days after mating and are ready to breed in as little as 10 weeks. Females can have 5 to 10 litters, so infestations grow quickly.