Its spots may be found below the hocks and the insides of the legs. A median lump is present in males. In , all alleged G. Nubian giraffe including Rothschild's giraffe G. Its range includes parts of Uganda and Kenya. The dark spots may also have paler radiating lines or streaks within them. Spotting does not often reach below the hocks and almost never to the hooves. This ecotype may also develop five "horns".
The ossicones are more erect than in other subspecies and males have well-developed median lumps. The same study found that The West African giraffe was more closely related to the Rothchild's giraffe than the Kordofan and its ancestor may have migrated from eastern to northern Africa and then to its current range with the development of the Sahara Desert. Spots may or may not extend below the hocks, and a median lump is present in males. The spotting pattern extends throughout the legs but not the upper part of the face.
The neck and rump patches tend to be fairly small. The species also has a white ear patch. The spots extend down the legs and get smaller. The median lump of males is less developed.
A median lump is usually present in males. The median lump of males is underdeveloped. The tongue, and inside of the mouth are covered in papillae. Male giraffes become darker as they age. Instead, the adults rely on their size and ability to defend themselves.
However, camouflage appears to be important for calves, which spend a large part of the day in hiding, away from their mothers; further, over half of all calves die within a year, so predation is certainly important. It appears, therefore, that the spotted coat of the giraffe functions as camouflage for the young, while adults simply inherit this coloration as a by-product. At least 11 main aromatic chemicals are in the fur, although indole and 3-methylindole are responsible for most of the smell.
Because the males have a stronger odour than the females, the odour may also have sexual function. The radius and ulna of the front legs are articulated by the carpus , which, while structurally equivalent to the human wrist, functions as a knee.
The giraffe's pelvis, though relatively short, has an ilium that is outspread at the upper ends. 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. To get back up, it first gets on its knees and spreads its hind legs to raise its hindquarters. It then straightens its front legs. With each step, the animal swings its head. Intermittent short "deep sleep" phases while lying are characterised by the giraffe bending its neck backwards and resting its head on the hip or thigh, a position believed to indicate paradoxical sleep.
It suggests that competitive pressure from smaller browsers, such as kudu , steenbok and impala , encouraged the elongation of the neck, as it enabled giraffes to reach food that competitors could not. This advantage is real, as giraffes can and do feed up to 4.