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
Rothschild's giraffe in ISIS (international species information system) registered zoos (which does not include the Nairobi Giraffe Centre), making both it and the reticulated giraffe the most commonly kept phenotypes of "Giraffa". Rothschild's giraffe Rothschild's giraffe ("Giraffa camelopardalis rothschildi") is a subspecies of the giraffe. It is one of the most endangered distinct populations of giraffe, with 1671 individuals estimated in the wild in 2016. The IUCN currently recognizes only one species of giraffe with nine subspecies. "Giraffa camelopardalis rothschildi" was named after the Tring Museum's founder, Walter Rothschild, and is also known as the Baringo giraffe, after the Lake Baringo area