![]() However, according to the People’s Trust for Endangered Species resource, Great Britain's population size is around 5,400,000 individuals. As a result, millions of mice are killed annually.Īccording to IUCN, the House mouse is common and widespread throughout its range but no overall population estimate is available. On the other hand, these animals are persecuted and killed around the globe due to being considered pests for a number of reasons: they consume stored grains their burrows often damage root crops these rodents move into homes, thus disturbing humans and finally, these mice carry multiple diseases that are very dangerous to humans. On one hand, House mice are killed in large numbers in scientific research. Weaning occurs at 3 weeks old, and the age of sexual maturity is 5 - 7 weeks old. They attain their coat at 10 days old, opening their eyes by 14 days of age. Newborn babies of this species are blind and lack fur. Usually, gestation period lasts 19 - 21 days in non-lactating females and longer - in lactating ones. The duration of pregnancy depends on whether the female is lactating or not. Moreover, there have been known cases of females, producing up to 14 litters in a single year. ![]() ![]() When conditions are favorable, females may yield as many as 5 - 10 litters per year, each one containing 3 - 12 young with an average of 5 - 6. Mating occurs year-round with a peak period, lasting from late spring to early autumn, especially in populations, inhabiting northern parts of their range. ![]() About 30% of individuals in the wild exhibit a polyandrous mating system, where each female has multiple mates during the breeding season. House mice have a polygynous mating system, which means that one male mates with multiple females. ![]()
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