The Southern red muntjac (Muntiacus muntjak) is a deer species native to Southeast Asia. It was formerly known as the Indian muntjac or the common muntjac before the species was taxonomically revised to represent only populations of Sunda and perhaps Malaysia. The other populations being attributed to this species are now attributed to Muntiacus vaginalis (Northern red muntjac). Muntjacs are also referred to as barking deer. It is listed as Least Concern on the IUCN Red List. This muntjac has soft, short, brownish or grayish hair, sometimes with creamy markings. It is among the smallest deer species. It is an omnivore and eats grass, fruit, shoots, seeds, bird eggs, and small animals, and occasionally scavenges on carrion. Its calls sound like barking, often when frightened by a predator, hence the common name "barking deer". Males have canines, short antlers that usually branch just once near the base, and a large postorbital scent gland used to mark territories. The species was formerly classified as Cervus muntjac. The Southern red muntjac has a short but very soft, thick, dense coat that is more dense in cooler regions. Its face is darker and the limbs are dark to reddish brown and the coat color seasonally varies from darker brown to yellowish and grayish brown and is white ventrally. Its ears have much less hair, but otherwise are the same color as the rest of the head. Male muntjacs have short antlers, about long, that protrude from long body hair-covered pedicels above the eyes. Females have tufts of fur and small bony knobs instead of antlers. Males also have elongated (), slightly curved upper canines, which can be used in male-male conflicts and inflict serious injury. The body length of muntjacs varies from , with a long tail, and shoulder height ranging from . Adult weight ranges between , with males being larger than females. Muntjacs are unique among the deer, having large, obvious facial (preorbital, in front of the eyes) scent glands used to mark territories or to attract females.