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A close-up of a male Thomson's gazelle: males have horns that are thicker and longer than those of the female. Thomson's gazelle is a relatively small gazelle; it stands 60–70 cm (24–28 in) at the shoulder. Males weigh 20–35 kg (44–77 lb), while the slightly lighter females weigh 15–25 kg (33–55 lb).
The social structure of the springbok is similar to that of Thomson's gazelle. Mixed-sex herds or harems have a roughly 3:1 sex ratio; bachelor individuals are also observed. [14] In the mating season, males generally form herds and wander in search of mates. Females live with their offspring in herds, that very rarely include dominant males.
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.
They have a territorial male as a leader in herds and sometimes group with other species, such as Grant's gazelle joining with Thomson's gazelle. [1] They can reach top speeds of 50 miles per hour (80 km/h) and have the ability to jump and turn sharply. They have adapted well to running in open environments. [2]
Oryx (/ ˈ ɒr ɪ k s / ORR-iks) 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 and annulated. [2]
Stotting occurs in several deer species of North America, including mule deer, pronghorn, [3] and Columbian black-tailed deer, when a predator is particularly threatening, [4] and in a variety of ungulate species from Africa, including Thomson's gazelle and springbok. [5] It is also said to occur in the blackbuck, a species found in India. [6]
The Grant's gazelle looks similar to a Thomson's gazelle, except it is much larger and has lyre-shaped horns which are stout at the base, clearly ringed, and measuring 45–81 cm (18–32 in) long. A useful field mark is the white on the rump that extends over the top of the tail in Grant's but not Thomson's gazelles.
The red-fronted gazelle gives birth to one fawn after a gestation period of 184–189 days. The fawn is likely to wean at around three months. Based on the closely related Thomson's gazelle, females may breed as early as nine months, while males may not mature until 18 months. [9] The lifespan is up to 14.5 years in captivity.