Whether or not this is true, they usually see you before you see them. Pronghorn hair is very brittle and is shed throughout the year. During extreme weather conditions, the hollow hair provides excellent insulation. Pronghorn hair is also used as an alarm signal. By erecting the white rump hair, a pronghorn alerts the herd of possible danger.
Pronghorn are selective, opportunistic foragers.
They feed on forbs, shrubs, grasses, and sometimes cacti and domestic crops. Forbs make up the largest part of their diet, followed by shrubs, then grasses. Forbs are typically eaten from spring to late fall and are critical to good fawn production. Shrubs are eaten all year, but are most important in winter when forbs are not readily available. Grasses, though relatively unimportant, are eaten when young and succulent.