The Vietnam mouse-deer (Tragulus versicolor), also known as the silver-backed chevrotain, is a small species of even-toed ungulate belonging to the family Tragulidae. It is one of the smallest hoofed mammals in the world.
Description
The Vietnam mouse-deer is characterized by its distinctive two-toned pelage: a silver-grey or grizzled grey coat on its back, which contrasts sharply with its white underside. Its neck and throat typically feature three prominent white stripes. Like all chevrotains, it lacks antlers or horns. Males possess elongated, tusk-like canine teeth that protrude from their mouths, used for defense and in territorial disputes. These animals are generally solitary and nocturnal, relying on dense forest cover for camouflage. They are herbivores, primarily feeding on leaves, fruits, and fungi found on the forest floor.
Taxonomy and History
The species was first scientifically described in 1910 based on specimens collected near Nha Trang, Vietnam. For decades after its initial description, very little was known about the Vietnam mouse-deer. The last confirmed sighting prior to its rediscovery was in 1990, leading many to fear it had gone extinct due to habitat loss and hunting pressure.
Rediscovery
In 2017, a team of scientists from Global Wildlife Conservation (GWC), the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW), and Southern Institute of Ecology in Vietnam launched an expedition to southern Vietnam based on reports from local villagers who claimed to have seen the animal. They set up camera traps in a forested area and, after several months, successfully captured numerous images of the Vietnam mouse-deer. The rediscovery was officially announced in November 2019, generating significant international interest and hope for conservation efforts.
Habitat and Distribution
The Vietnam mouse-deer is endemic to Vietnam. Its known habitat consists of dry, tropical forests, likely in coastal areas. Before its rediscovery, its precise range was poorly understood, but current research focuses on identifying and protecting its remaining populations.
Conservation Status
The International Union for Conservation of Nature (IUCN) Red List classifies the Vietnam mouse-deer as Critically Endangered. The primary threats to its survival include:
- Habitat loss: Deforestation and habitat fragmentation due to agricultural expansion, infrastructure development, and logging.
- Poaching: The species is hunted for its meat, which is considered a delicacy, and for the illegal wildlife trade. Snares are a particular threat, as they are indiscriminate and often capture non-target species like the mouse-deer.
Its rediscovery has spurred renewed efforts to understand its ecology, assess its population size, and implement effective conservation strategies to protect this unique and elusive mammal.