Harris' Antelope Squirrel (Ammospermophilus harrisii) lives in desert shrubland across Southwestern North America. Its conservation status is Least Concern.
Fascinating facts about the Harris' Antelope Squirrel
- Harris' antelope squirrels become living shade machines. Their bodies run a scorching 97-107 °F (36.7-41.6 °C), so they drape their tails over their backs to block the sun and then lie spread-eagled on the ground in a posture called "heat dumping." This behavior lets them stay active in the hottest hours without sweating, relying instead on salivation to cool down. By creating their own portable shade, they survive where many mammals would overheat.
- Harris' antelope squirrels time their babies for spring. Mating peaks between February and March, though it can start as early as December and stretch to June. After a brief thirty-day gestation, females usually raise a single litter of about 6.5 pups, each weighing just 3.6 g at birth. The kits hit half their adult weight in 56 days and reach full size after 217 days.
- Despite looking like a chipmunk, this desert rodent is surprisingly hefty. Adults weigh 4-5 ounces (110-140 g) and measure 8.5-10 inches (22-25 cm) in body length, with an additional 3-4 inch (7.6-10.2 cm) tail.
- A single Harris' antelope squirrel can cover about 274 m in a typical foraging bout, stitching together a network of burrows under shrubs and rocky hills. Population density swings with the seasons: in southern Arizona spring to late summer, there are 0.24-0.36 individuals per hectare, dropping to 0.08-0.24 per hectare in autumn and winter.
- By munching on cactus fruits, mesquite beans and countless desert seeds, Harris' antelope squirrels act as mobile seed-dispersers, moving plant propagules far from the parent plant. Their pelage blends with rocky terrain, lowering predation risk, yet when a predator appears they sprint to cover, tail held high, and emit a 2.24-second high-frequency alarm trill. This blend of camouflage, rapid escape, and vocal warning shaping the desert's plant community.
Sources
Every fact above was checked against these pages, and kept only where one of them states it.
At a glance
RangeSouthwestern North America
HabitatDesert shrubland
DietSeeds and insects
About the Harris' Antelope Squirrel
In the arid expanse of the Sonoran Desert, the Harris' Antelope Squirrel darts with reckless abandon, its tawny coat blending seamlessly into the rocky outcroppings as it pursues its daily foraging rituals. With a flick of its bushy tail, it springs from boulder to boulder, its large eyes ever-vigilant for the telltale signs of predators lurking in the shadows. As it moves through this unforgiving landscape, the Harris' Antelope Squirrel embodies a spirit of resilience and adaptability, its very existence a testament to the enduring power of life in the harshest of environments.
Hear the Harris' Antelope Squirrel, and 4,400+ more
Real recorded sounds, 11 nature games and a free Daily 5, 1v1 quiz duels, conservation wins and a safe Kids mode. Free on Feravox.
