Paraguay still has a vast area of almost undisturbed forest and savanna in the region known as the Chaco, where three large national parks, totalling over 1½ million hectares, protect a fauna that includes jaguar, puma, ocelot and a peccary that was ‘rediscovered’ in 1975. In 1979 the author, who is widely known as a scientist and conservationist, spent two months in Paraguay investigating the wildlife situation and national parks and has made recommendations for conservation measures to the Government.