Zebra are related to the Horse family and are gregerious in nature. Family groups are stable members maintaining strong bonds over many years. Mutual grooming, where zebras stand together and nibble the hair on each other’s neck and back, helps develop and preserve these bonds. 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. Zebras are important prey for lions and hyenas, and to a lesser extent for hunting dogs, leopards and cheetahs. When a family group is attacked, the members form a semicircle, face the predator and watch it, ready to bite or strike should the attack continue. If one of the family is injured the rest will often encircle it to protect it from further attack. They usually move in groups and usually with wildebeest, hartebeest or roan.