L=11-16" (283-400 mm). Also called "Packrat." Grayish-brown
in color, with white feet and throat. Medium-length tail is short-haired,
gray above and white below.
NATURAL HISTORY: Mostly herbivorous. Nocturnal. Solitary. Look for their
burrows or rock shelters that have the entrance covered by cactus segments.
In rock shelter, where there is little decomposition, one can find packrat
middens which are urine-hardened masses of plant and animal material.
Middens form as generations of packrats habitually urinate in a single
area. As the urine evaporates, it becomes sticky and plant and animal
debris may stick to it. Over many 1000s of years, a large mass accumulates
and scientists can analyze the midden to follow the changes in plants
and animals in a given location over 1000s of years.