The impala is an antelope, which grows to about 32 inches at the shoulders. Only the males have horns. Males live in either bachelor groups or with "harems" of up to one hundred females. Impala are very fast and can jump up to nine feet high or thirty feet forwards in a single bound. Impala browse on bushes and graze on grasses. When water is unavailable they can live off of dew for long periods. Impala fall prey to leopard, cheetah, and hunting dogs.