Reeves's muntjac grows to high at the shoulder and in length, plus a short tail up to long. It weighs between when fully grown. It is reddish-brown in appearance with striped markings on its face. The belly is creamy-white, with lighter fur extending to the neck, chin, and the underside of the tail. The males have short antlers, usually or less, and long upper canines, usually about long. Females have bony lumps on their foreheads and localized black spots. The Taiwanese subspecies, commonly known as the Formosan Reeves' muntjac, is darker than other subspecies.
Behavior
Reeves's muntjac feeds on herbs, blossoms, succulent shoots, fungi, berries, grasses, and nuts, and has also been reported to eat tree bark. Eggs and carrion are eaten opportunistically. It is also called the barking deer due to its distinctive barking sound, though this name is also used for other species of muntjacs. The barking sound is common during mating or when provoked. Its preferred habitats are forest and shrubland. It is a solitary and crepuscular animal. Both males and females defend small territories that they mark with preorbital gland secretions that are thought to be pheromonal in nature. When fighting, males first use their antlers to push enemies off balance so they can wound them with their upper canine teeth.
Reproduction
Female muntjacs become sexually mature within the first year of life. Mating occurs throughout the year. Their gestation period lasts from 209 to 220 days. Females limit the number of mating bouts, though time between successive bouts is determined by males.
Introductions
Reeves's muntjacs were introduced to the grounds of Woburn Abbey in Bedfordshire in the 19th century by the then Duke of Bedford. While a small number reportedly escaped, they are extremely unlikely to be the source of the current UK population. Larger numbers of Reeves's muntjac escaped from Whipsnade Zoo, and they are the more likely ancestors, in addition to other releases. Under the Wildlife and Countryside Act 1981 it was illegal to release the species except where already established, and the Invasive Alien Species Order 2019 has subsequently prohibited the capture and re-release of muntjac in all cases. Colonies exist throughout England south of Derbyshire, and the population continues to grow. In Ireland, sightings in 2008 caused the government, concerned at the risk of the species becoming established, to quickly introduce a year-round hunting season. In the 1960s, several specimens escaped from an exhibition zoo in the Bōsō Peninsula in eastern Japan. By 2017, their numbers had reached at least 60,000. It is considered a harmful invasive species and has inflicted severe damage to ashitaba plantations. Also, Reeves's muntjac escaped a zoo on Izu Ōshima in 1970 when a fence fell due to a typhoon. A muntjac eradication effort on Izu Ōshima was undertaken in 2007-2014 but failed, and as of 2014, at least 11,000 individuals exist and have a yearly population growth rate of 15%. This failure has been blamed on inadequate survey methods that underestimated the population of the nocturnal species.
The tanned skin of Reeves's muntjac is notable for its softness and is occasionally used in beauty-care products, musical instruments, lenses, and antique items packaging. Low-fat muntjac meat is also noted for its culinary qualities.
