In this case, San Diego pocket mice are able to obtain their water through food or metabolic by-products. These mice can subsist on seeds alone and are capable of surviving without drinking additional water.
Their cheeks have fur-lined pouches for storing seeds. San Diego pocket mice are granivores and predominantly forage on seeds. Some common plants seen in these habitats include Yucca and desert scrub. A typical home range is composed of rocks, sand and herbaceous vegetation for cover. Territories are often defended to protect habitat from intruders with the exception of potential mates during the breeding season. Males often occupy a home range of 3,500 square metres (38,000 sq ft) while females occupy a range of 2,500 square metres (27,000 sq ft). Large eyes and ears help individuals sense their surroundings. Verbal communication may be utilized to indicate the presence of danger in some cases when a mouse squeaks. Burrows are divided into separate chambers with one for sleeping and the rest for storing food. Burrows serve as the primary habitat for the mouse in the winter during a period of decreased activity. Food is gathered in cheek pouches and stored in separate burrow chambers. The mice forage at night in attempt to avoid predators. At higher speeds, the pocket mouse “gallops” by hitting the ground with both feet and using its tail for balance. The San Diego pocket mouse is built for slow quadrupedal locomotion.
In captive studies without predation, individuals have been known to live up to six years. Mortalities often result from predation, which increases in the spring when mice are actively foraging, reproducing and defending territories. San Diego pocket mice have a lifespan ranging from four months to two years in the wild.
Females serve as the primary caregivers for their offspring, nursing young and protecting them inside their burrows. An average litter is composed of 2–6 individuals with an average gestation period of 24–26 days. There is significant evidence that correlates reproductive events with rainfall. Many individuals mate in the spring, but others have been known to mate throughout the year. The San Diego pocket mouse is often a solitary animal, which makes it difficult to study its reproductive history. californicus, which shares the same habitat. The San Diego pocket mouse is a homoeothermic endotherm with both hypsodont and lophodont teeth. Its length ranges from 170 to 200 mm and its weight is approximately 17–22 g. This moderately sized mouse is characterized by dark brown fur covering the top of its body with white fur on its underside. * Package Will Be sent Out With-in 1-2 bussines day after Payment is Received.The San Diego pocket mouse occupies the northern region of Baja California near San Diego extending into Mexico.
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