* Found in most of North America.
* It is found in nearly every dry-land habitat (grassland, forest) within its range. Population is 10 to 15 per acre.
* It feeds on seeds, nuts, acorns, and insects.
* It breeds from February through November and has litters of 3-5 with two to four litters.
* Tail is sharply bicolored white below, dark above, 2 to 5 inches long Body 2 ½ to 4 inches long, often difficult to distinguish from similar species.
* Has been a host of hanta virus.