B. Howell, 1920 Z. montanus Merriam, 1897 Z. orarius Preble, 1899 The Pacific jumping mouse (Zapus trinotatus) is a species of rodent in the family Zapodidae.

[3] These rodents prefer to live in moist habitats and are frequently found in riparian or meadow areas near rivulets.

They rely on grass seeds as their main diet, and thus they prefer inhabiting areas with thick vegetation, which provide refuge from predators as well as food resources.

They spend most of the autumn season fattening up in preparation for winter hibernation, which is spent in small burrows in the ground.

[5] The habitat of Pacific jumping mice includes streams, brushlands, lakes, woodlands, forests, fields, swamps, meadows, shrubs, bogs, marshes, and the banks of rivers and ponds.

They forage for food material at ground level and will cut down tall plants to reach seeds.

Other behaviors include cutting grass and leaving it in an orderly pile, but hey do not store food.

Pacific jumping mice prepare for summer by constructing a fragile domed-shaped nest with a single entrance, usually placed on the ground.

[6] The genetic makeup of a given population of Pacific jumping mice depends on their mating system, characteristics of the species, demography, and dispersal.