they face less competition. The most common predators of the Grant's gazelle are cheetahs and wild dogs. Humans also hunt gazelles. In the Serengeti, Grant's gazelle is a prey item for cheetahs, but the Thomson's gazelle is preferred. However, in Nairobi National Park, Grant's gazelle is preferred over Thomson's gazelle, making it an important resource to the cheetah. Jackals are major predators of fawns. The Grant's gazelle is a gregarious, territorial, and sometimes migratory species. The home ranges of females overlap with those of the males. Only male gazelles are territorial. Male gazelles will herd all females that cross their territories. When the females are in estrus, they are strongly guarded by the dominant male, which prevents other males from mating with them. Any female that tries to leave is aggressively herded back. Most of the time, the male's stance in relation to her is enough to keep the female from leaving. Bachelor groups are made up of adolescent and adults not holding territory. Any new members perform intimidation displays to enter the group. However, bachelor groups tend to be loose and members can leave whenever they want. Grant’s gazelles will sometimes join groups of Thomson’s gazelles to protect themselves from predators. Predators are less likely to attack the Grant’s gazelle when associated with these mixed groups, perhaps because the Thomson’s gazelle provides an easier target. The larger, older males with thick horns have the best chance of establishing a territory. Conflicts between adult males are usually solved with intimidation displays. The bucks circle each other and swing their necks from side to side, displaying their neck power. Neck strength is important in an actual fight and the male that cannot keep up yields. Gazelles of nearly equal neck strength are more likely to engage in actual combat. Fighting occurs in young males more often than older ones. Dominant males can simply run off subordinates rather than having to display to them. Diet Grant's gazelles are generally mixed feeders that both browse and graze. In one study, their diet consisted of 66% browse and 34% graze. Rainfall seems to be a determinant of their diets. One way the Grant’s gazelle withstands dehydration and heat stress is by being very efficient in digesting dry matter. Grant’s gazelles consume a smaller amount of food than domesticated animals, but they are better-suited for extreme environments because they derive protein from forage more quickly.