The black rhino is the highest profile entry on South Africa's threatened species list (good places to spot these include Mkhuze Game Reserve and Hluhluwe-Imfolozi Park. The riverine rabbit is the country's most endangered mammal (the only place in the world it is found is near rivers in the central Karoo). The wild dog (seen with luck in Hluhluwe-Imfolozi Park) is also endangered, as is the roan antelope. Endangered bird species include the graceful wattled crane and the blue swallow. The African penguin and the Cape vulture are considered threatened.