When are baby mice sexually mature?

Baby mice, or pups, typically reach sexual maturity between 5 and 8 weeks of age. This can vary slightly depending on factors like breed, diet, and environmental conditions.

Keep in mind that while they may be physically able to reproduce at this age, it's generally considered ethically responsible to wait until they are at least 12 weeks old before breeding them. This allows them to fully develop physically and mentally, ensuring a healthier pregnancy and litter.