Grevy's Zebra
Conservation status
Endangered (IUCN)
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Perissodactyla Family: Equidae Genus: Equus Species: E. grevyi
Binomial name
Equus grevyi Oustalet, 1882
Range map

 The Grevy's zebra (Equus grevyi), sometimes known as the Imperial zebra, is the largest species of zebra. It is found in the wild in Kenya and Ethiopia. Compared to other zebras, it is tall, has large ears, and its stripes are narrower. The species is named after Jules Grévy, a president of France, who, in the 1880s, was given one by the government of Abyssinia. In certain regions of Kenya, the plains zebras and Grevy's zebras coexist. 

File links The following pages link to this file: Grevys Zebra Categories: GFDL images ... The conservation status of a species is an indicator of the likelihood of that species remaining extant either in the present day or the near future. ... Image File history File links Status_iucn2. ... The Siberian Tiger is a subspecies of tiger that are critically endangered. ... The IUCN Red List of Threatened Species (also known as the IUCN Red List and Red Data List), created in 1963, is the worlds most comprehensive inventory of the global conservation status of plant and animal species and can be found here. ... For other uses, see Scientific classification (disambiguation). ... For other uses, see Animal (disambiguation). ... Typical Classes See below Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates. ... Subclasses & Infraclasses Subclass †Allotheria* Subclass Prototheria Subclass Theria Infraclass †Trituberculata Infraclass Metatheria Infraclass Eutheria Mammals (class Mammalia) are warm-blooded, vertebrate animals characterized by the presence of sweat glands, including milk producing sweat glands, and by the presence of: hair, three middle ear bones used in hearing, and a neocortex... Families Equidae Tapiridae Rhinocerotidae The odd-toed ungulates or Perissodactyla are large to very large browsing and grazing mammals with relatively simple stomachs and a large middle toe. ... Species - Donkey - African Wild Ass - Domestic Horse - Wild Horse - Grevys Zebra - Onager - Kiang - Plains Zebra - Cape Mountain Zebra - Hartmanns Mountain Zebra Equidae is the family of horse-like animals, order Perissodactyla. ... Species - Donkey - African Wild Ass - Domestic Horse - Wild Horse - Grevys Zebra - Onager - Kiang - Plains Zebra - Cape Mountain Zebra - Hartmanns Mountain Zebra Equidae is the family of horse-like animals, order Perissodactyla. ... This article does not cite any references or sources. ... Dr Jean-Frédéric Emile Oustalet (August 24, 1844 - October 23, 1905) was a French zoologist. ... Image File history File links Equus_grevyi. ... For other uses, see Zebra (disambiguation). ... François Paul Jules Grévy (August 15, 1813 - September 9, 1891) was a President of the French Third Republic. ... The President of France, known officially as the President of the Republic (Président de la République in French), is Frances elected Head of State. ... // Development and commercial production of electric lighting Development and commercial production of gasoline-powered automobile by Karl Benz, Gottlieb Daimler and Maybach First commercial production and sales of phonographs and phonograph recordings. ... This article needs cleanup. ...

Taxonomy

The Grevy's zebra differs from the other two zebras in its primitive characteristics and different behaviour. It was the first zebra to emerge as a species. All members of the family are of the genus Equus, but the genus is commonly subdivided into four subgenera; Equus, Asinus, Hippotigris and Dolichohippus. The Plains zebra and Mountain zebra belong to Hippotigris, but the Grevy's zebra is the sole species of Dolichohippus. In many respects, it is more akin to the asses (Asinus). Nevertheless, DNA and molecular data show that zebras do indeed have monophyletic origins. Species - Donkey - Domestic Horse - Grevys Zebra - Onager - Przewalskis Horse - Plains Zebra - Mountain Zebra Equidae is the family of horse-like animals, order Perissodactyla. ... Binomial name Boddaert, 1785 Range map of The Plains zebra subspecies E. q. ... Binomial name Equus zebra Linnaeus, 1758 Equus hartmannae Matschie, 1898 Mountain Zebra consist of two species, namely the Cape Mountain Zebra (Equus zebra) and the Hartmanns Mountain Zebra (Equus hartmannae). ... Ass has several meaninings: Áss - One of the Aesir Asshole - a slang term Anus - an intimate part of the body Buffoon - a fool, idiot, clown Buttocks - an area of the body Donkey - an animal of the horse family Rectum - yet another part of the body Asses is also the plural... In phylogenetics, a group is monophyletic (Greek: of one stem) if all organisms in that group are known to have developed from a common ancestral form, and all descendants of that form are included in the group. ...

Physical description

Zebra walking

Grevy's zebra is the largest of all wild equines. It is 2.5-3 m (20-40 ft) from head to tail with a 38-75 cm (15-30 in) tail, and stands 1.25-1.6 m (4'1"-5'3") high at the shoulder. These zebras weigh 350-450 kg (770-990 lb). The stripes are narrow and close-set, being broader on the neck, and they extend to the hooves. The belly and the area around the base of the tail lack stripes. With all of the stripes closer together and thinner than most of the other zebras, it is easier to make a good escape and to hide from predators. The ears are very large, rounded, and conical. The head is large, long, and narrow, particularly mule-like in appearance. The mane is tall and erect; juveniles having a mane extending the length of the back.

Diet and Feeding

Grevy's zebra feed mostly on grasses but they will also eat fruit, shrubs and bark. They may spend 60-80% of their days eating, depending on the availability of food. Their well adapted digestive system allows them to subsist on diets of lower nutritional quality than that necessary for herbivores. Also, Grevy's zebras require less water than other zebras.

Lifestyle

Wild mare in Kenya

Grevy's zebra is similar to the donkey in many ways. Behaviourally, for example, it has a social system characterised by small groups of adults associated for short time periods of a few months. Adult males spend their time mostly alone in territories of 2-12 km², which is considerably smaller than the territories of the wild asses. The social structure of the Grevy's zebra is well-adapted for the dry and arid scrubland and plains that it primarily inhabits, less for the more lush habitats used by the other zebras. It communicates over long distances. Binomial name Linnaeus, 1758 For other uses, see Donkey (disambiguation). ...

The territories are marked by dung piles and females who wander within the territory mate solely with the resident male. Small bachelor herds are known. Like all zebras and asses, males fight amongst themselves over territory and females. The species is vocal during fights (an asinine characteristic), braying loudly. However unlike other zebras, territory holding Grevy zebra males will tolerate other males who wander in their territory possibly because non-resident males do not try to mate with the resident male's females nor interfere in his breeding activities.

Grevy's zebra at the Henry Doorly Zoo

Image File history File links Download high-resolution version (2000x1414, 799 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Henry Doorly Zoo User:Cburnett Grevys Zebra ... Image File history File links Download high-resolution version (2000x1414, 799 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Henry Doorly Zoo User:Cburnett Grevys Zebra ... The Henry Doorly Zoo is a zoo in Omaha, Nebraska. ...

Reproduction

Grevy's zebras mate year-round. Gestation of the zebra lasts 350-400 days, with a single foal being born. A newborn zebra will follow anything that moves and thus new mothers are highly aggressive towards other mares a few hours after they gave birth. This prevents the foal from imprinting another female as it's mother. To adapt to an arid lifestyle, Grevy's zebra foals take longer intervals between suckling bouts and do not drink water until they are 3 months old. They also reach independence from the mare sooner than other equids.

Status

The Grevy's zebra is considered endangered, partly due to hunting for its skin, which fetches a high price on the world market. Its also suffers habitat destruction, human disturbances at water holes and competition with domestic grazing animals. There are estimated to be 1,500 - 2,000 Grevy's zebra still living in the wild. They are however common in captivity. An endangered species is a species whose population is so small that it is in danger of becoming extinct. ...

References

• Churcher, C.S. 1993. Mammalian Species No. 453. American Society of Mammalogists.
• Nowak, R.M. and J.L. Paradiso. 1983. Walker's Mammals of the World, Fourth edition. John Hopkins University Press, Baltimore, London.
• Mother-infant behavior of wild Grevy's zebra: Adaptations for survival in semi-desert East Africa. Becker, CD; Ginsberg, JR Animal Behaviour [ANIM. BEHAV.]. Vol. 40, no. 6, pp. 1111-1118. 1990.
• Equid Specialist Group (1996). Equus grevyi. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 11 May 2006. Database entry includes justification for why this species is endangered

The IUCN Red List of Threatened Species (also known as the IUCN Red List and Red Data List), created in 1963, is the worlds most comprehensive inventory of the global conservation status of plant and animal species and can be found here. ... The World Conservation Union or International Union for the Conservation of Nature and Natural Resources (IUCN) is an international organization dedicated to natural resource conservation. ...

External links

Wikimedia Commons has media related to:

Grevy's Zebra

• Grevy's Zebra: Wildlife summary from the African Wildlife Foundation
• ARKive: images and movies of the Grevy's zebra.

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