Differences between brown mice (field mice) and gray mice (house mice):

• Color: Field mice come in gray or brown varieties, while house mice are either gray or brown.
• Underbelly: Field mice have a white underbelly, while house mice have no color variation on the belly.
• Size and Tail: Field mice are about 6 inches long with a furry tail, while house mice are smaller, about 3 inches long with a scaly, hairless tail.
• Droppings: Field mouse droppings have pointed ends, while house mouse droppings are oblong and rounded ^{1 2}.