All antelope have permanent unbranched horns which grow throughout the animal's life. Antelope have excellent vision. Their eyes are large and situated on the sides of the head to allow a wide field of vision. Their main defense is fleeing from predators, and they are very fast runners. Antelope are efficient users of grassland.
Some species migrate.
All species have slightly different food requirements and this determines where they are distributed within the major habitats. The greater kudu is one of the most elegant and beautiful of the antelopes. They are the second largest of the species. Greater kudu are reddish brown to blue-gray in color. Males get darker with age.