The answer to 'what is mouse' is a small rodent that is a common household pest. Mice are typically 3-4 inches long with a slender body, large ears, and a long, thin tail. They have brown or gray fur and are known for their ability to squeeze through tiny openings to gain access to homes and buildings.
Mice are prolific breeders, with females able to have up to 12 litters per year with 5-6 babies per litter. They are omnivores, feeding on a wide variety of foods including grains, seeds, fruits, and even pet food. Mice are known to contaminate food sources, spread diseases, and cause damage by chewing through walls, wires, and other materials.