House Mice(Mus Musculus)
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Named for their tendency to invade homes, the house mouse is a rodent that can carry a lot of disease and will bite when cornered. House mice prefer to live in or near where humans live, and their rapid breeding can quickly make them a problem for homeowners.


  • Official Name: Mus Musculus
  • Length: 10cm (including tail)
  • Color: Brown, White, Tan (Mixed Colors)
  • Poisonous: No
  • Cause of Distress: Property Damage, Noise, Disease, General Grossness


House mice reproduce very quickly. The average female will have roughly 7 mice per litter and as many as 10 litters a year, which means that within one year, a single pair of mice may have 70 babies. Each of those babies can start mating within five weeks after they have left their mother, creating further breeding issues. Mice generally live from 9 months to a year, although some live longer in captivity. Mouse populations are controlled due to predators and disease, but healthy mice that live inside of a home can quickly become an out of control problem.


House mice are not prone to biting. But they are willing to bite if cornered. They do not carry as many diseases as some of their invasive relatives, like the deer mouse, but they can carry serious diseases such as leptospirosis. They are also prone to stealing food and property destruction, as well as leaving “presents” all around the home. Mice can also be dangerous to other pets.


Prevention starts with exclusion. It’s important that you seal up all entranceways, regardless of whether you think you have a house mice problem or not. Mice will continue to enter through any holes in your home indefinitely until each one is sealed safely, and more mice will come even after the first few have invaded. You should also make sure that you’re sealing up any food you have that may attract mice, and if you’re feeling adventurous you may want to consider getting a cat.