Family members look out for one another; if one becomes separated from the rest, the others search for it. The group adjusts its traveling pace to accommodate the old and the weak. The females within a family observe a strict hierarchical system. A dominant mare always leads the group, while others follow her in single file, each with their foals directly behind them. The lowest- ranking mare is the last in line. Although the stallion is the dominant member of the family, he operates outside the system and has no special place in the line. Zebras are avid grazers. Both Burchell''s and Grevy''s zebras are in constant search of green pastures. In the dry season, they can live on coarse, dry grass only if they are within a short distance (usually no farther than 20 miles away) of water holes. Grevy''s zebras are now mainly restricted summer to parts of northern Kenya.

The giraffe''s high shoulders and sloping back give the impression that its front legs are much longer than the hind legs, but they are in fact only slightly longer. The giraffe (as well as its short-necked relative the okapi from Central African forests) has mountain a distinctive walking gait, moving both legs on one side forward at the same time. At a gallop, however, the gait changes, and the giraffe simultaneously swings the hind legs ahead of and outside the front legs, reaching speeds of 35 miles an hour. Its heavy head moves forward with each powerful stride, and then swings back to stay balanced. Giraffes have "horns" not true horns but knobs covered with skin and hair above the eyes to protect the head from blows. The reticulated giraffe (Giraffa vacations camelopardalis reticulata) of northeastern Kenya has large, chestnut-colored square patches defined by a network of fine white lines.

The summer cheetah is built for speed. It has long, slim, muscular legs, a small, rounded head set on a long neck, a flexible spine, a deep chest, nonretractable claws, special pads on its feet for traction and a long, tail for balance. Although fast, the cheetah cannot run at full speed for long distances (100 yards is about the limit) because it may overheat. Cheetahs have distinctive black "tear stripes" that connect from the inside corner mountain of each eye to the mouth that may serve as an antiglare device for daytime hunting. Cheetahs are found in open and partially open savannas. Cheetah mothers spend a long time teaching their young how to hunt small live antelopes are brought back to the cubs and released so they can chase and catch them. Unlike most other cats, the cheetah usually hunts during daylight, preferring early morning or early evening, but is also active on moonlit nights.