honey badger

The honey badger (''Mellivora capensis''), also known as the ratel ( or ), is a mammal widely distributed in Africa, Southwest Asia, and the Indian subcontinent. Because of its wide range and occurrence in a variety of habitats, it is listed as Least Concern on the IUCN Red List.

It is the only living species in the genus ''Mellivora'' and in the mustelid subfamily Mellivorinae. Despite its name, the honey badger does not closely resemble other badger species; instead, it bears more anatomical similarities to weasels. It is primarily a carnivorous species and has few natural predators because of its thick skin, strength and ferocious defensive abilities.

Taxonomy

''Viverra capensis'' was the scientific name used by Johann Christian Daniel von Schreber in 1777 who described a honey badger skin from the Cape of Good Hope. ''Mellivorae'' was proposed as name for the genus by Gottlieb Conrad Christian Storr in 1780.
Mellivorina was proposed as a tribe name by John Edward Gray in 1865.

The honey badger is the only species of the genus ''Mellivora''. Although in the 1860s it was assigned to the badger subfamily, the Melinae, it is now generally agreed that it bears few similarities to the Melinae. It is much more closely related to the marten subfamily, Guloninae, and furthermore is assigned its own subfamily, Mellivorinae. Differences between Mellivorinae and Guloninae include differences in their dentition formulae. Though not in the same subfamily as the wolverines, which are a genus of large-sized and atypical Guloninae, the honey badger can be regarded as another, analogous, form of outsized weasel or polecat.

Evolution

The species first appeared during the middle Pliocene in Asia. A number of extinct relatives are known dating back at least 7 million years to the Late Miocene. These include ''Mellivora benfieldi'' from South Africa and Italy, '' Promellivora'' from Pakistan, and '' Howellictis'' from Chad. More distant relatives include ''Eomellivora'', which evolved into several different species in both the Old and New World, and the giant, long-legged ''Ekorus'' from Kenya.

Subspecies

In the 19th and 20th centuries, 16 zoological specimens of the honey badger were described and proposed as subspecies.
, 12 subspecies are recognised as valid taxa. Points taken into consideration in assigning different subspecies include size and the extent of whiteness or greyness on the back.

Description

The honey badger has a fairly long body, but is distinctly thick-set and broad across the back. Its skin is remarkably loose, and allows the animal to turn and twist freely within it. The skin around the neck is thick, an adaptation to fighting conspecifics. The head is small and flat, with a short muzzle. The eyes are small, and the ears are little more than ridges on the skin, another possible adaptation to avoiding damage while fighting.

The honey badger has short and sturdy legs, with five toes on each foot. The feet are armed with very strong claws, which are short on the hind legs and remarkably long on the forelimbs. It is a partially plantigrade animal whose soles are thickly padded and naked up to the wrists. The tail is short and is covered in long hairs, save for below the base.

Honey badgers are the largest terrestrial mustelids in Africa. Adults measure in shoulder height and in body length, with the tail adding another . Females are smaller than males. In Africa, males weigh while females weigh on average. The mean weight of adult honey badgers from different areas has been reported at anywhere between , with a median of roughly , per various studies. This positions it as the third largest known badger, after the European badger and hog badger, and fourth largest extant terrestrial mustelid after additionally the wolverine. However, the average weight of three wild females from Iraq was reported as , about the typical weight of male wolverines or male European badgers in late autumn, indicating that they can attain much larger than typical sizes in favorable conditions. However, an adult female and two males in India were relatively small, at the respective weights of and a median of . Skull length is in males and for females.

There are two pairs of mammae. The honey badger possesses an anal pouch which, unusual among mustelids, is eversible, a trait shared with hyenas and mongooses. The smell of the pouch is reportedly "suffocating", and may assist in calming bees when raiding beehives.

The skull bears little similarity to that of the European badger, and greatly resembles a larger version of that of a marbled polecat. The skull is very solidly built, with that of adults having no trace of an independent bone structure. The braincase is broader than that of dogs.

The dental formula is: . The teeth often display signs of irregular development, with some teeth being exceptionally small, set at unusual angles or absent altogether. Honey badgers of the subspecies ''signata'' have a second lower molar on the left side of their jaws, but not the right. Although it feeds predominantly on soft foods, the honey badger's cheek teeth are often extensively worn. The canine teeth are exceptionally short for carnivores. The tongue has sharp, backward-pointing papillae which assist it in processing tough foods.

The winter fur is long, (being long on the lower back), and consists of sparse, coarse, bristle-like hairs, with minimal underfur. Hairs are even sparser on the flanks, belly and groin. The summer fur is shorter (being only long on the back) and even sparser, with the belly being half bare. The sides of the head and lower body are pure black. A large white band covers the upper body, from the top of the head to the base of the tail. Honey badgers of the ''cottoni'' subspecies are unique in being completely black.

Behaviour and ecology

The honey badger is mostly solitary, but has also been sighted in Africa to hunt in pairs during the breeding season in May. It also uses old burrows of aardvark, warthog and termite mounds.
It is a skilled digger, able to dig tunnels into hard ground in 10 minutes. These burrows usually have only one entry, are usually only long with a nesting chamber that is not lined with any bedding.

The honey badger is notorious for its strength, ferocity and toughness. It is known to savagely and fearlessly attack almost any other species when escape is impossible, reportedly even repelling much larger predators such as lion and hyena. Bee stings, porcupine quills, and animal bites rarely penetrate their skin. If horses, cattle, or Cape buffalos intrude upon a honey badger's burrow, it will attack them.In the Cape Province it is a potential prey species of the African leopard. African rock pythons, Nile crocodiles and spotted hyenas also prey on honey badgers occasionally.

Diet

The honey badger has the least specialised diet of the weasel family next to the wolverine. It accesses a large part of its food by digging it out of burrows.
It often raids beehives in search of both bee larvae and honey. It also feeds on insects, frogs, tortoises, turtles, lizards, rodents, snakes, birds and eggs. It also eats berries, roots and bulbs. When foraging for vegetables, it lifts stones or tears bark from trees. Some individuals have even been observed to chase away lion cubs from kills. It devours all parts of its prey, including skin, hair, feathers, flesh and bones, holding its food down with its forepaws. It feeds on a wide range of vertebrates and seems to subsist primarily on small vertebrates. Honey badgers studied in Kgalagadi Transfrontier Park preyed largely on geckos and skinks (47.9% of prey species), gerbils and mice (39.7% of prey). The bulk of its prey comprised species weighing more than such as cobras, young African rock python and South African springhare.
In the Kalahari, honey badgers were also observed to attack domestic sheep and goats, as well as kill and eat black mambas. A honey badger was suspected to have broken up the shells of tent tortoise. In India, honey badgers are said to dig up human corpses.

Despite popular belief, there is no evidence that honeyguides guide the honey badger.

Reproduction

Little is known of the honey badger's breeding habits. Its gestation period is thought to last six months, usually resulting in two cubs, which are born blind. Its lifespan in the wild is unknown, though captive individuals have been known to live for approximately 24 years. The voice of the honey badger is a hoarse "khrya-ya-ya-ya" sound. When mating, males emit loud grunting sounds. Cubs vocalise through plaintive whines. When confronting dogs, honey badgers scream like bear cubs.

Distribution and habitat

The honey badger ranges through most of sub-Saharan Africa, from the Western Cape, South Africa, to southern Morocco and southwestern Algeria and outside Africa through Arabia, Iran, and Western Asia to Turkmenistan and the Indian Peninsula. It is known to range from sea level to as much as above sea level in the Moroccan High Atlas and in Ethiopia's Bale Mountains.

Relationships with humans

Honey badgers often become serious poultry predators. Because of their strength and persistence, they are difficult to deter. They are known to rip thick planks from hen-houses or burrow underneath stone foundations. Surplus killing is common during these events, with one incident resulting in the death of 17 Muscovy ducks and 36 chickens.

Because of the toughness and looseness of their skin, honey badgers are very difficult to kill with dogs. Their skin is hard to penetrate, and its looseness allows them to twist and turn on their attackers when held. The only safe grip on a honey badger is on the back of the neck. The skin is also tough enough to resist several machete blows. The only sure way of killing them quickly is through a blow to the skull with a club or a shot to the head with a gun, as their skin is almost impervious to arrows and spears.

During the British occupation of Basra in 2007, rumours of "man-eating badgers" emerged from the local population, including allegations that these beasts were released by the British troops, something that the British categorically denied.BBC News (12 July 2007)
British blamed for Basra badgers
, BBC A British army spokesperson said that the badgers were "native to the region but rare in Iraq" and "are usually only dangerous to humans if provoked". The director of Basra's veterinary hospital, Mushtaq Abdul-Mahdi, confirmed that honey badgers had been seen in the area as early as 1986. The deputy dean of Basra's veterinary college, Ghazi Yaqub Azzam, speculated that "the badgers were being driven towards the city because of flooding in marshland north of Basra." The event received coverage in the Western press during the 2007 silly season.Weaver, M. (12 July 2007),
Basra badger rumour mill
, ''The Guardian''

The honey badger has also been reported to dig up human corpses in India.
In Kenya, the honey badger is a major reservoir of rabiesChong, W. K
RABIES IN KENYA
, Southern and Eastern African Rabies Group and is suspected to be a significant contributor to the sylvatic cycle of the disease.

Notes

References

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External links

{{Taxonbar, from=Q173128

Weasels
Carnivorans of Africa
Mammals of Africa
Mammals of South Asia
Mammals of the Middle East
Mammals of Central Asia
Tool-using mammals
honey badger
Extant Pliocene first appearances