Jackal

Jackal
A black-backed jackal at Cape Cross, Namibia
A side-striped jackal
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Carnivora
Family:	Canidae
Genus:	Canis in part
Species
golden jackal, Canis aureus side-striped jackal Canis adustus black-backed jackal Canis mesomelas

A jackal is a member of any of three small to medium-sized species of predators of the genus Canis, found in Africa, Asia, and southeastern Europe. Jackals fill a similar ecological niche to the coyote (sometimes called the "American jackal"¹) in North America. Both of these are omnivorous predators of small to medium-sized animals, as well as scavengers when the need be. The jackal's long legs and curved canine teeth are adapted for hunting small mammals, birds, and reptiles. Big feet and fused leg bones give them a physique for long-distance running, capable of maintaining speeds of 16 km/h (9.9 mph) for extended periods of time. Jackals are crepuscular, most active at dawn and dusk.

In the society of jackals, the social unit is that of a monogamous pair which defends its territory from other pairs. These territories are defended by vigorously chasing intruding rivals and marking landmarks around the territory with their urine and feces. The territory may be large enough to hold some young adults who stay with their parents until they establish their own territories. Jackals may occasionally assemble in small packs, for example to scavenge a carcass, but they normally hunt either alone or as pairs.

Contents 1 Etymology 2 Taxonomy and relationships 3 Several Species 4 Use in slang 5 References 6 External links 7 Footnotes

Etymology

The English word "jackal" derives from Persian shaghāl شغال via Turkish çakal, ultimately from Sanskrit sṛgālaḥ.²³

Taxonomy and relationships

In 1816, in the third volume of Lorenz Oken’s Lehrbuch der Naturgeschichte, the author found sufficient similarities in the dentition of jackals and the North American coyotes to place these species into a new separate genus Thos after the classical Greek word θώς=^{clarification needed}. Oken’s idiosyncratic nomenclatorial ways however, aroused the scorn of a number of zoological systematists. Nearly all the descriptive words used to justify the genus division were relative terms without a reference measure and that the argument did not take into account the size differences between the species which can be considerable. Angel Cabrera, in his 1932 monograph on the mammals of Morocco, briefly touched upon the question whether or not the presence of a cingulum on the upper molars of the jackals and its corresponding absence in the rest of Canis could justify a subdivision of the genus Canis. In practice, he chose the undivided-genus alternative and referred to the jackals as Canis.⁴

Oken’s Thos theory had little immediate impact on taxonomy and/or taxonomic nomenclature, though it was revived in 1914 by Edmund Heller who embraced the new genus theory. Heller’s name and the designations he gave to various jackal species and subspecies live on, though the genus has been changed from Thos to Canis.⁴

Modern research has clarified the relationships between the "jackal" species. Despite their outward similarity, they are not always closely related to one another. The side-striped jackal and black-backed jackal are close to each other, but separated from the other African and Eurasian wild dogs and wolves by some six or seven mya. The golden jackal and the Ethiopian wolf are part of a group also including the grey wolf, domestic dog, and coyote⁵. Breeding experiments in Germany with poodles, jackals, and later on with the resulting hybrids showed that unlike wolf-dog hybrids, jackal-dog hybrids show a decrease in fertility, significant communication problems, as well as an increase of genetic disorders after three generations of interbreeding, much like coydogs.⁶

Several Species

Species	Trinomial authority	Description	Range
The side-striped jackal Canis adustus	Sundevall, 1847	Primarily resides in wooded areas, unlike other jackal species. It is the least aggressive of the jackals, rarely killing on large mammals.7	Central and southern Africa
The golden jackal Canis aureus The	Linnaeus, 1758	The heaviest of the jackals, and the only species to subsist outside of Africa. Although often grouped with the other jackals, genetic and morphological research indicates that the golden jackal is more closely related to the gray wolf and the coyote.89	Northern Africa, Southeastern Europe, the Middle East, Western Asia, and South Asia
The black-backed jackal Canis mesomelas	Schreber, 1775	The most lightly-built jackal, this is considered to be the oldest living member of the genus Canis.10 It is the most aggressive of the jackals, having been known to attack animal prey many times its own weight, and it has more quarrelsome intra-pack relationships11	Southern Africa and eastern coast of Kenya, Somalia, and Ethiopia

The Ethiopian wolf (Ruppell, 1840) of the Ethiopian highlands has at times been regarded as a jackal, hence were called the "red jackal" or the "simian jackal", but these are now usually classified as wolves.

Use in slang

The popular, although largely-inaccurate image of jackals is as scavengers, and this has resulted in a somewhat negative connotation to them.^{citation needed}

• For example, there is the insult, "May the jackal feast well on your miserable carcass."

• In Nonviolent Communication, "jackal language" refers to communication that labels, judges, and criticizes the target.^{citation needed}

• The expression "jackalling" is sometimes used, in some countries, to describe the work done by a subordinate in order to save the time of a superior.^{citation needed} (For example, a junior lawyer may peruse large quantities of material on behalf of a barrister).^{citation needed} This usage came from the tradition that the jackal will sometimes lead a lion to its prey.^{citation needed}

• In other languages, the same word is sometimes used to describe the behavior of persons who try to scavenge scraps from the misfortunes of others. For example, by looting a village from which the inhabitants have fled because of a disaster.^{citation needed}

References

• The New Encyclopedia of Mammals edited by David Macdonald, Oxford University Press, 2001; ISBN 0-19-850823-9
• Cry of the Kalahari, by Mark and Delia Owens, Mariner Books, 1992.
• The Velvet Claw: A Natural History of the Carnivores, by David MacDonald, BBC Books, 1992.
• Foxes, Wolves, and Wild Dogs of the World, by David Alderton, Facts on File, 2004.

External links

• AWF.org, Jackal: Wildlife summary from the African Wildlife Foundation
• Additional information

Footnotes