Giraffe pelvis, though relatively short, has an ilium that is outspread at the upper ends. A giraffe has only two gaits: walking and galloping. Walking is done by moving the legs on one side of the body at the same time, then doing the same on the other side. When galloping, the hind legs move around the front legs before the latter move forward, and the tail will curl up. The animal relies on the forward and backward motions of its head and neck to maintain balance and the counter momentum while galloping. The giraffe can reach a sprint speed of
Nubian giraffe by Swedish zoologist Carl Linnaeus in the "Systema Naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis" in 1758. He described the giraffe from Ethiopia or Sennar of Eastern Sudan. A 2016 analysis of giraffe subspecies proposed the Rothschild's giraffe ("G. c. rothschildi") could be considered a conspecific ecotype of the Nubian giraffe, however these results are not definitive. Following Linnaeus's description of the Nubian giraffe, several specimens were described by other naturalists and zoologists since the end of the 18th century under different scientific names, which are all considered synonyms of "Giraffa camelopardalis