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Females are usually larger than males.
Coloration is grayish, yellowish, or reddish yellow. Sylvicapra is distinguished from Cephalophus in having ears that are pointed, rather than rounded, and horns that are sharply pointed, rise above the plane of the face, and are usually present only in males. Females occasionally carry small, stunted horns, and such females seem to be more common in some localities than in others. The gray duiker avoids dense forests but usually is found in places with adequate vegetative cover. This hardy and adaptable antelope lives at higher elevations than any other hoofed mammal in Africa.