The Malayan weasel (''Mustela nudipes'') or Malay weasel is a

weasel Weasels are mammals of the genus ''Mustela'' of the family Mustelidae. The genus ''Mustela'' includes the least weasels, polecats, stoats, ferrets, and European mink. Members of this genus are small, active predators, with long and slend ...

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

native to the

Malay Peninsula The Malay Peninsula is located in Mainland Southeast Asia. The landmass runs approximately north–south, and at its terminus, it is the southernmost point of the Asian continental mainland. The area contains Peninsular Malaysia, Southern Tha ...

and the islands of

Sumatra Sumatra () is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the list of islands by area, sixth-largest island in the world at 482,286.55 km2 (182,812 mi. ...

and

Borneo Borneo () is the List of islands by area, third-largest island in the world, with an area of , and population of 23,053,723 (2020 national censuses). Situated at the geographic centre of Maritime Southeast Asia, it is one of the Greater Sunda ...

. It is listed as

Least Concern A least-concern species is a species that has been evaluated and categorized by the International Union for Conservation of Nature (IUCN) as not being a focus of wildlife conservation because the specific species is still plentiful in the wil ...

on the

IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological ...

Description

The Malayan weasel is reddish-brown to grayish-white. Its head is lighter in colour than the rest of the body. The distal half of the

tail The tail is the elongated section at the rear end of a bilaterian animal's body; in general, the term refers to a distinct, flexible appendage extending backwards from the midline of the torso. In vertebrate animals that evolution, evolved to los ...

is pale orange to white. The soles of the feet are naked. It has a body length of with a long tail.

Distribution and habitat

The Malayan weasel is native to the Malay Peninsula from southern Thailand to peninsula Malaysia, and

and

. It is generally associated with tropical lowland forest, but has been recorded in habitats ranging from

swamp A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in ...

and

montane forest Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures lapse rate, fall as elevation increases, causing the ecosystem to stratify. This stratification is ...

s to plantations and high elevation montane scrub up to . A better understanding of habitat preferences would require surveys specifically aimed at the Malayan weasel because it is rarely detected by general camera trap, road mortality, and visual surveys. In Borneo, it was photographed in

primary Primary or primaries may refer to: Arts, entertainment, and media Music Groups and labels * Primary (band), from Australia * Primary (musician), hip hop musician and record producer from South Korea * Primary Music, Israeli record label Work ...

dipterocarp Dipterocarpaceae is a family of flowering plants with 22 genera and about 695 known species of mainly lowland tropical forest trees. Their distribution is pantropical, from northern South America to Africa, the Seychelles, India, Indochina, Indo ...

and logged forest at elevations of .

Ecology and behavior

The Malayan weasel is very poorly known, but assumed to occur at low densities and behave elusively based on low detection rates. It is a ground-living species and its morphology not suited to climbing. Their diet is unknown but assumed to be similar to other small weasels: mostly carnivorous, including small rodents, birds, eggs, and small reptiles. Most records of the species occurred during the day, but more research is needed to determine whether Malayan weasels are also active nocturnally. The majority of sightings have been of single animals, suggesting a solitary nature as seen in most

species of genus ''Mustela''. Not much is known about its breeding habits, but a litter of four has been recorded.

Taxonomy

There are two

subspecies In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morpholog ...

of the Malayan weasel: * ''M. n.nudipes'' * ''M. n. leucocephalus''

Relationship with humans

Records of Malayan weasels in highly degraded forests, plantations, and even suburban areas suggest that the species is tolerant of humans. Malayan weasels are sometimes killed by villagers for medicinal use, food, trophy, fur, for killing chickens, and incidental by-catch in snares. Regardless, in some areas they are seen positively and allowed in villages as a predator of crop-raiding rats. The wide range of the species across various habitats and tolerance of humans suggests resilience to local habitat conversion. Though overall numbers are stable, Malayan weasels are protected in peninsular Malaysia and Thailand due to local declines.

References

Weasels Mammals described in 1822 Carnivorans of Malaysia Mammals of Brunei Fauna of Sumatra Carnivorans of Borneo Mammals of Indonesia Taxonomy articles created by Polbot {{carnivora-stub