The slender-tailed meerkat has a head and body length of 24.5 to 31 centimeters and the tail is 20 to 24 centimeters. Slender-tailed meerkats weigh between 620 and 960 grams. They have a yellow-grey round body that is muscular with long claws on their hands. Their head is broad at the back with a pointed muzzle. The tail is thinly haired, tapered and shorter than the body. The eyes are surrounded by "masks" of black skin and fur in sharp contrast with white brows and cheeks.