The Common Tsessebe or Sassaby (Damaliscus lunatus lunatus) is found primarily in Angola, Zambia, Namibia, Botswana, Zimbabwe, Eswatini (Swaziland), and South Africa. Tsessebe are the fastest antelope in Africa and can run at speeds over 90 km/h. They are quite large animals, with males weighing 137 kg and females weighing 120 kg, on average. Their horns range from 37 cm for females to 40 cm for males. For males, horn size plays an important role in territory defense and mate attraction, although horn size is not positively correlated with territorial factors of mate selection. Their bodies are chestnut brown.