Abstract: Given are data concerning mammals in the Kyzylsu mountain juniperous nature reserve (north-west extremities of the Hissar ridge) in Uzbekistan 1979 through 1981. It describes habitats and provides data on rare and endangered species populations such as Tien-Shan brown bear, Turkistan lynx, snow leopard, Central Asian otter, golden eagle, bearded vulture, Himalayan vulture; and game species such as long-tailed marmot, porcupine, badger, Siberian ibex, Himalayan snow-cock, chukar, etc.