Fauna of South Africa the world’s seventeen megadiverse countries. In the extreme northwest of the country is true desert, which is the southernmost end of the Namib desert, a desert that is at least 55 million years old, making it the oldest desert in the world. This arid corner intergrades into the extensive semi-arid Karoo found across much of South Africa, covering the Northern Cape and into parts of the Western Cape, Eastern Cape and the Free State. This biome used to be extensive grassland in the past, but has become dominated by small shrubs and succulents due to centuries of overgrazing. To the
Karoo Desert National Botanical Garden such as the succulents of the unique Robertson Karoo vegetation type, and patches of the threatened Breede Shale Renosterveld vegetation type. The cultivated area, with its network of pathways, includes a very large succulent collection. Including the greenhouses it maintains nearly 3,000 species. There are another 400 plant species that are naturally indigenous to the garden's premises. A range of wild animals also naturally occurs in the garden, including the shrub hare, grey mongoose, three tortoises species ("Chersina angulata", "Stigmochelys pardalis" & "Homopus areolatus") and a range of other small mammals, reptiles and amphibians. Karoo Desert National Botanical Garden The