Roosevelt's muntjac import from Northern Vietnam) but it could have been an Indian muntjac subspecies annamensis. Roosevelt's muntjac was believed to have been extinct since 1929. However, there have been several recent claims to have rediscovered the species, from evidence including skulls owned by villagers in the Truong Son (Annamite) mountains of northern Laos and far northwestern Vietnam. More recently, photographs from a camera trap at Xuan Lien Nature Reserve in Vietnam appear to have identified two individuals. Roosevelt's muntjac A single specimen of the Roosevelt's muntjac or Roosevelt's barking deer ("Muntiacus rooseveltorum") was presented to the Field Museum in 1929 following
Reeves's muntjac species except where already established. 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