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The giraffe's head and neck are held up by large muscles and a nuchal ligament, which are anchored by long thoracic vertebrae spines, giving them a hump. [17] [63] [36] Adult male reticulated giraffe feeding high on an acacia, in Kenya. The giraffe's neck vertebrae have ball and socket joints.
The morphology of ossicones in the extinct relatives of giraffes and okapi varies widely. Some species had two pairs of ossicones rather than one (e.g. Giraffokeryx), some had rugged textures (e.g. Shansitherium), and some had large, flattened ossicones (e.g. male Prolibytherium).
Modern, giraffe-like restoration in the MEPAN Outdated moose-like restoration Museum reconstruction. Sivatherium resembled the modern okapi, but was far larger, and more heavily built, being about 2.2 m (7.2 ft) tall at the shoulder, 3 m (9.8 ft) in total height with a weight up to 400–500 kg (880–1,100 lb). [5]
The current IUCN taxonomic scheme lists one species of giraffe with the name G. camelopardalis and nine subspecies. [1] [7] A 2021 whole genome sequencing study suggests the northern giraffe as a separate species, and postulates the existence of three distinct subspecies, [8] and more recently, one extinct subspecies.
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Angolan giraffe (G. g. angolensis), also known as Namibian giraffe Is found in northern Namibia , south-western Zambia , Botswana , and western Zimbabwe . A 2009 genetic study on this subspecies suggests the northern Namib Desert and Etosha National Park populations each form a separate subspecies. [ 8 ]
Another female giraffe at the zoo, Iggy, is also pregnant and expected to give birth soon. Gestation periods in Masai giraffes can last up to 15 months and calves can be six feet tall when they ...
The Seneca Park Zoo’s other female Masai giraffe, Iggy, is also pregnant and within in her delivery window. Giraffe gestation periods range from 13 to 15 months making it difficult to predict a ...