a member of the antelope family. It's a herd animal and grazes on the medium length grasses found on the open areas of flood plains. They have fairly mobile lips that allow them to selectively graze, preferring the tenderest growth and avoiding the older and harder of the blades of grass. When grazing on green grass Topi's will go without drinking, getting their moisture requirements from the grass itself. However, they will drink at open waterholes if the grass is dry