Claim: Collared brown lemur can be distinguished according to sexes based on the colors of their dorsal coat, ventral coat, tail, face and head, cheeks, and eyes.
Evidence: The following table illustrates the coloration differences between the sexes: Brownish-gray Browner and more rufous than the male's Paler gray Pale creamy-gray Darker gray with a dark stripe along the spine Same as dorsal coat Muzzle, face, and crown are dark gray to black; creamy to gray-colored eyebrow patches vary between individuals Gray, with faint gray stripe extending over crown Creamy to rufous-brown cheeks and beard are thick and bushy Rufous-brown, but less prominent than the male's orange-red orange-red