The Javan ferret-badger (''Melogale orientalis'') is a

mustelid The Mustelidae (; from Latin ''mustela'', weasel) are a family of carnivorous mammals, including weasels, badgers, otters, ferrets, martens, minks and wolverines, among others. Mustelids () are a diverse group and form the largest family in ...

endemic to

Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's List ...

and

Bali Bali () is a province of Indonesia and the westernmost of the Lesser Sunda Islands. East of Java and west of Lombok, the province includes the island of Bali and a few smaller neighbouring islands, notably Nusa Penida, Nusa Lembongan, and Nu ...

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

. It is listed as

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

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 the world's most comprehensive inventory of the global conservation status of biol ...

and occurs from at least elevation in or close to forested areas.

Description

An adult Javan ferret-badger weighs between with a body length of and a tail of . The head is small with a narrow, blunt snout, long whiskers and large eyes. The body is low-slung with brown silky fur tinged with red and in some lights looks tawny or greyish. The back of the head and throat are darker brown and there are white markings on the face, neck, throat, chest and abdomen.

Distribution and habitat

The Javan ferret-badger is endemic to the islands of Java and Bali in Indonesia. Its exact range is unknown, but it is present in hilly and mountainous areas and may also occur at lower altitudes. In western Java, it has been observed in

Mount Halimun Salak National Park Mount Halimun Salak National Park is a 400 km2 conservation area in the Indonesian province of West Java on the island of Java. Established in 1992, the park comprises two mountains, Mount Salak and Mount Halimun with an 11-kilometer forest c ...

and in

Gunung Gede Pangrango National Park Mount Gede Pangrango National Park is a national park in West Java, Indonesia. The park is centred on two volcanoes—Mount Gede and Mount Pangrango—and is 150 km² in area. It evolved from already existing conservation areas, such as Ci ...

. In Bali, it has been recorded

primary forest An old-growth forestalso termed primary forest, virgin forest, late seral forest, primeval forest, or first-growth forestis a forest that has attained great age without significant disturbance, and thereby exhibits unique ecological featur ...

on a forest track at an elevation of and in an area of

secondary forest A secondary forest (or second-growth forest) is a forest or woodland area which has re-grown after a timber harvest or clearing for agriculture, until a long enough period has passed so that the effects of the disturbance are no longer evident. ...

and

rubber plantation A plantation is an agricultural estate, generally centered on a plantation house, meant for farming that specializes in cash crops, usually mainly planted with a single crop, with perhaps ancillary areas for vegetables for eating and so on. The ...

s not far from human habitations. Javan ferret badgers have been recorded in the wild in just 30 localities in the Province of Banten, West Java, Central Java, Yogyakarta, East Java and on Bali.

Behaviour and ecology

Like other ferret-badgers, the Javan ferret-badger is a

fossorial A fossorial () animal is one adapted to digging which lives primarily, but not solely, underground. Some examples are badgers, naked mole-rats, clams, meerkats, and mole salamanders, as well as many beetles, wasps, and bees. Prehistoric eviden ...

animal that makes use of pre-existing burrows in the forest floor. It is mainly

nocturnal Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed sens ...

, and small groups of adults and juveniles forage together. It is often found in dense undergrowth and it may be able to scramble about in trees and bushes. Its diet is mainly

carnivorous A carnivore , or meat-eater (Latin, ''caro'', genitive ''carnis'', meaning meat or "flesh" and ''vorare'' meaning "to devour"), is an animal or plant whose food and energy requirements derive from animal tissues (mainly muscle, fat and other sof ...

and consists of small animals, birds, amphibians, eggs, carrion and invertebrates, and it also eats fruit. Data from litters offered for sale on online platforms suggests a peak in breeding from December to March In the

, Javan ferret-badgers seem fairly common and have been observed scavenging for food scraps after nightfall at picnic areas and turning over the

leaf litter Plant litter (also leaf litter, tree litter, soil litter, litterfall or duff) is dead plant material (such as leaves, bark, needles, twigs, and cladodes) that have fallen to the ground. This detritus or dead organic material and its constituent ...

. They seemed undisturbed by the presence of humans and one young individual even fed on

biscuit A biscuit is a flour-based baked and shaped food product. In most countries biscuits are typically hard, flat, and unleavened. They are usually sweet and may be made with sugar, chocolate, icing, jam, ginger, or cinnamon. They can also be ...

s held out on an observer's hand.

Threats and conservation

Much of Java's primary forest has been fragmented and degraded. However, the Javan ferret-badger is thought to be at least partially adaptable to habitat changes, as it has been recorded in secondary forests and plantations. Over a ten year period from 2011 to 2020, Javan ferret badgers were observed offered for sale in eleven wildlife markets on Java and Bali, and on several online platforms.

References

{{Taxonbar, from=Q912020 Melogale Mammals of Indonesia Mammals described in 1888 Taxonomy articles created by Polbot