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The impala is a medium-sized, slender-bodied antelope, comparable to the kob, puku and Grant's gazelle in size and build. [17] The head-and-body length is around 130 centimetres (51 in). [18] Males reach approximately 75–92 cm (30–36 in) at the shoulder, while females are 70–85 cm (28–33 in) tall.
Aepyceros is a genus of African antelope that contains a single living species, the impala. It is the only known member of the tribe Aepycerotini. [1] Two extinct species are known, Aepyceros datoadeni [2] and Aepyceros shungurae. [3] A third species, Aepyceros premelampus has been transferred to a new genus, Afrotragus. [4]
Bovids range in size from the 38 cm (15 in) long royal antelope to the 3.3 m (11 ft) long gaur, which can reach 1,500 kg (3,300 lb) in weight. [1] Over a billion each of domesticated sheep , cattle , and goats , and over 200 million domesticated water buffalo , 14 million domestic yak , and 300,000 domesticated gayal are used in farming worldwide.
Antelope vary greatly in size. For example, a male common eland can measure 178 cm (5 ft 10 in) at the shoulder and weigh almost 950 kg (2,100 lb), whereas an adult royal antelope may stand only 24 cm ( 9 + 1 ⁄ 2 in) at the shoulder and weigh a mere 1.5 kg ( 3 + 1 ⁄ 4 lb).
[49] [50] The primary defensive tactic is herding, where the young animals are protected by the older, larger ones, while the herd runs as a group. Typically, the predators attempt to isolate a young or ill animal and attack without having to worry about the herd.
The Bovidae includes three domesticated species whose use has spread around the world: cattle, sheep, and goats; all are from Eurasia. Other large bovids that have been domesticated but which have less ubiquitous distributions include the domestic buffalo (from the wild water buffalo ), domestic yak (from the wild yak ), zebu (from the Indian ...
Between 1989 and 2003, ungulates were monitored in the Maasai Mara on a monthly basis; the survey revealed a decline of giraffes by 75%, of common warthogs by 80%, of hartebeest by 76%, and of impala by 67%, attributed to the increased number of livestock grazing in the park and an increase in poaching. [27]
An adult male is around 1.6 m (5.2 ft) tall at the shoulder and can weigh up to 942 kg (2,077 lb) with a typical range of 500–600 kg (1,100–1,300 lb). Females are around 1.4 m (4.6 ft) tall and weigh 340–445 kg (750–981 lb). It is the second-largest antelope in the world, being slightly smaller on average than the giant eland. [3]