The bezoar is a handsome animal, its blackish-brown markings contrasting with the lighter body color. Summer coat is reddish-brown, turning brownish-gray in winter, with old males ashy-gray. Underparts and back of legs are white. The dark blackish-brown areas include the face, throat, chest, dorsal stripe, shoulder stripes, flank stripes, front of legs, and tail. The chin beard is long and black and, in old males, as wide as the chin. Callouses develop on the knees and sometimes on the chest. Males have large, laterally compressed, scimitar-shaped horns. The front edge is sharp, forming a keel for some distance, above which are bold, sharp-edged, widely separated knobs. Females grow short, slender horns and do not have beard. They are tawny-brown at all seasons, with a dark stripe from eye to muzzle.