Facts about this mammal
Following mating time, female mice will normally develop a copulation plug which prevents further mating. This plug stays in place for some 24 hours. The birth period is about 19–21 days, and they give birth to a litter of 3–14 young (up to six to eight). One female can have 5 to 10 litters per year, so the mouse population can increase very quickly.
House mice also rely on pheromones for social communication, some of which are produced by the preputial glands of both sexes. The tear fluid and urine of male mice also contains pheromones, such as major urinary proteins. Mice detect pheromones mainly with the vomeronasal organ Jacobson's organ, located at the bottom of the nose.The urine of house mice, especially that of males, has a characteristic strong odor.