Weighing an ounce or less, these tiny mice spend a lot of time hibernating, usually from October through April. When awake, these mice are capable of jumping over a yard almost straight up in order to dodge predators. They can be found in areas of dense plant cover such as stream sides and meadows, and seem to particularly like areas with skunk cabbage. They primarily eat grass seeds, berries, tender vegetation, and underground fungi, but can also eat insects.