Orange County Health Department >Environmental Health >Rodent Control >Rodents >House Mouse

The House Mouse is shorter, about half the size of a typical rat and has more delicate features. They have soft gray or brown fur and a white under belly and are known for their dark whiskers. Their average body length is about 3-4 inches. Their tails are thin and scaly and run about the length of their bodies between 3-4 inches.
Mice nests are made from fine shredded paper or other fibrous material, are often found in sheltered locations. House mice have a characteristic musky odor that identifies their presence. Mice are occasionally seen during daylight hours.
Mice have litters of 4-7 babies once a month. Their babies are born without fur, totally pink.
The House Mouse usually feeds on cereal grains, but will typically eat anything. They eat often, nibbling bits of food. They are excellent climbers and can run up any rough vertical surface. Look for droppings, fresh gnawing and tracks indicate areas where mice are active.