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Speke's gazelle (Gazella spekei) is the smallest of the gazelle species. It is confined to the Horn of Africa, where it inhabits stony brush, grass steppes, and semi deserts.  This species has been sometimes regarded as a subspecies of the Dorcas gazelle, though this is now widely disregarded.  Severe habitat fragmentation means it is now impossible to assess the natural migratory or nomadic patterns of G. spekei.  Its numbers are under threat, and despite an increase in population, the IUCN in 2007 announced its status had changed from vulnerable to endangered. A captive population is maintained, and the wild population exists in the lower tens of thousands. As of 2008, this gazelle is classified as endangered under the IUCN Red List.
Speke's gazelle is named after John Hanning Speke, a British explorer of Central Africa.
Oryx is a genus consisting of four large antelope species called oryxes. Their pelage is pale with contrasting dark markings in the face and on the legs, and their long horns are almost straight. The exception is the scimitar oryx, which lacks dark markings on the legs, only has faint dark markings on the head, has an ochre neck, and has horns that are clearly decurved.
The goitered or black-tailed gazelle is a gazelle found in Georgia, Azerbaijan, Iran, parts of Iraq and Pakistan, Afghanistan, Tajikistan, Kyrgyzstan, Uzbekistan, Turkmenistan, Kazakhstan and in northwest China and Mongolia. The specific name, meaning "full below the throat", refers to the male having an enlargement of the neck and throat during the mating season.
The dorcas gazelle, also known as the ariel gazelle, is a small and common gazelle. The dorcas gazelle stands about 55–65 cm at the shoulder, with a head and body length of 90–110 cm and a weight of 15–20 kg. The numerous subspecies survive on vegetation in grassland, steppe, wadis, mountain desert and in semidesert climates of Africa and Arabia. About 35,000–40,000 exist in the wild.
The Antilopines are even-toed ungulates belong to the family Bovidae. The members of Antilopini are often referred to as true antelopes, and are usually classified as the only living representatives of the Antilopinae. True antelopes occur in much of Africa and Asia, with the highest concentration of species occurring in East Africa in Sudan, Eritrea, Ethiopia, Somalia, Kenya, and Tanzania. The saigas and Tibetan antelopes are related to true antelopes (Antilopinae) and sheep and goats (Caprinae), but are often placed in their own subfamily, Saiginae. These animals inhabit much of central and western Asia. The dwarf antelopes are sometimes placed in a separate subfamily, Neotraginae, and live entirely in sub-Saharan Africa. The Antilopinae are a subfamily of Bovidae that roam the East African savannas and deserts and they have acclimated to possess wider insertion muscles to enable them to avoid predators in the open savanna.
The mountain gazelle or the Palestine mountain gazelle. is a species of gazelle widely but unevenly distributed.
The rhim gazelle or rhim, also known as the slender-horned gazelle, African sand gazelle or Loder's gazelle, is a pale-coated gazelle with long slender horns and well adapted to desert life. It is considered an endangered species because fewer than 2500 are left in the wild. They are found in Algeria, Egypt, Tunisia and Libya, and possibly Chad, Mali, Niger, and Sudan.
The chinkara, also known as the Indian gazelle, is a gazelle species native to Iran, Afghanistan, Pakistan and India.
Soemmerring's gazelle, also known as the Abyssinian mohr, is a gazelle species native to the Horn of Africa. The species was described and given its binomen by German physician Philipp Jakob Cretzschmar in 1828. Three subspecies are recognized. It is possibly no longer present in Sudan.
Cuvier's gazelle is a species of gazelle native to Algeria, Morocco, Western Sahara, and Tunisia. It is also known as the edmi. It is one of the darkest gazelle species, possibly an adaptation to its partial woodland habitat. It is sometimes placed into the genus Trachelocele together with the goitered gazelles and the rhim gazelles.
The dama gazelle also known as the addra gazelle or mhorr gazelle, is a species of gazelle. It lives in Africa, in the Sahara desert and the Sahel. A critically endangered species, it has disappeared from most of its former range due to overhunting and habitat loss, and natural populations only remain in Chad, Mali, and Niger. Its habitat includes grassland, shrubland, semi-deserts, open savanna and mountain plateaus. Its diet includes grasses, leaves, shoots, and fruit.
Speke's weaver is a familiar East African songbird.
The wildlife of Chad is composed of its flora and fauna. Bush elephants, West African lions, buffalo, hippopotamuses, Kordofan giraffes, antelopes, African leopards, cheetahs, hyenas, and many species of snakes are found there, although most large carnivore populations have been drastically reduced since the early 20th century. Elephant poaching, particularly in the south of the country in areas such as Zakouma National Park, is a severe problem.
Speke's pectinator or Speke's gundi, is a species of rodent in the family Ctenodactylidae. It is monotypic within the genus Pectinator. It is found in Djibouti, Eritrea, Ethiopia, and Somalia. Its natural habitats are subtropical or tropical dry shrubland, subtropical or tropical dry lowland grassland, and rocky areas.
A gazelle is one of many antelope species in the genus Gazella. This article also deals with the seven species included in two further genera, Eudorcas and Nanger, which were formerly considered subgenera of Gazella. A third former subgenus, Procapra, includes three living species of Asian gazelles.
The Mongalla gazelle is a species of gazelle found in the floodplain and savanna of South Sudan. It was first described by British zoologist Walter Rothschild in 1903. The taxonomic status of the Mongalla gazelle is widely disputed. While some authorities consider it a full-fledged monotypic species in the genus Eudorcas, it is often considered a subspecies of Thomson's gazelle, while other authorities regard it as subspecies of the red-fronted gazelle.
Heuglin's gazelle, also known as the Eritrean gazelle, is a species of gazelle found east of the Nile River in Eritrea, Ethiopia and Sudan. It was considered a subspecies of the red-fronted gazelle or conspecific with Thomson's gazelle and Mongalla gazelle by some authors in the past. This small gazelle stands nearly 67 cm (26 in) at the shoulder and weighs between 15 and 35 kg. The coat is dark reddish brown with a dark reddish stripe on the flanks, except for the underparts and the rump which are white. Horns, present in both sexes, measure 15 to 35 cm in length.
The Arabian sand gazelle or reem is a species of gazelle native to the Middle East, specifically the Arabian and Syrian Deserts.