In the southern Kalahari, gemsbok, wildebeest and springbok are the principal prey. Elsewhere in the country there are gemsbok, alternatively known as oryx, nyala, bushbuck and springbok. Other antelope that have been tamed successfully include the gemsbok, the kudu, and the springbok. It also the home of several mammalian species like springbok, gemsbok and aardwolf. The animals butchered by the tools include waterbuck, hartebeest, springbok, pig and zebra. The riverbeds further inland are home to baboons, giraffes, lions, black rhinoceros and springbok. The social structure of the springbok is similar to that of Thomson's gazelle. Active mainly at dawn and dusk, springbok form harems (mixed-sex herds). Former Springbok rugby captain John Smit was born in Polokwane. South African rugby authorities continued to select Springbok players by race. The reverse depicts a springbok, the national animal of South Africa. The springbok is the national animal of South Africa. She had previously dated Springbok rugby player Francois Hougaard. On the reverse side of the Krugerrand is a springbok, South Africa's national animal. A similar change was envisioned for the national rugby squad's springbok emblem.