The field mouse is the common term for the long-tailed field mouse or wood mouse. It is a small mouse with large eyes and ears, and its fur is mostly dark brown with white along the underbelly. Adult long-tailed field mice are about 10 cm in length. The long-tailed field mouse is omnivorous, meaning it eats both plants and animals. Music from Amazon.com. From the opening of a brand new vinyl record to the hidden tracks on your favorite CDs, the melodies and beats of your favorite tunes can soothe, energize, create whole new memories, and even transform your entire mood. Field Mice Facts, Identification & Control What is a Field Mouse? Field mice is a term used for a variety of mice found in the U.S. including house mice (mus musculus).As the name implies, they are common in fields, which is also true of many other mice species. Dogs and Cats Pet Care and Advice plus Wild Animals. All Animal Similes. ... As poor as a Church Mouse ... * Indicates required field. Email * Taking care of the zoo’s animals involves designing diets to meet a variety of nutritional needs. The Lincoln Park Zoo Nutrition Center provides healthful meals for animals ranging from rhinos to Madagascar hissing cockroaches.