The impala is one of the most common and most graceful of all Africa’s antelopes. A slender, agile creature, it can clear formidable obstacles and run at speeds faster than 60km/h. Males are known as rams, while females are referred to as ewes and have no horns. Male impalas produce a scent from a gland on their foreheads to advertise their status to rivals. When he loses his rank, a male produces less scent.