North American Deermice rarely leave their homes during the day, but feed opportunistically at night on whatever is available: seeds, nuts, fruit, berries, insects and other animal matter, and whatever they find tasty in houses. Deermice have the most extensive range of any North American rodent and are found in almost every kind of habitat. Learn more about the Peromyscus maniculatus, more commonly known as a North American Deermouse, in this easy-to-read species overview by the Smithsonian's National Museum of Natural History.