The gray dorcopsis has a long muzzle and small, rounded ears. The forelegs are relatively longer in comparison to the hind legs than they are in most other members of the family Macropodidae. The tail is long and has a bare, cornified tip. The short, dense fur is smoky-grey above and paler grey beneath, with a yellowish patch around the single cloacal orifice. Males are much larger than females, a male weighing up to while a female reaches. The head and body length is in males and in females, with tails reaching and respectively.