Abstract: A group of rare and endangered species was segregated within the game and non-game mammals of the USSR. Some species in the group were formerly referred to game species. But due to over-hunting and the absence of measures aimed at their reproduction the population dropped sharply. Mammal fauna of the USSR includes more than 80 species that require special protection. The Red list of IUCN includes, among the others, white bear, Transcaucasian sub-species of brown bear, Amur and Turan tigers, snow leopard, Caucasian and Amur leopards, caracal, cheetah, Tien-Shan and Ussuri sub-species of dhole, Atlantic walrus, island seal, kulan, Bukhara red deer, New Land reindeer, goitered gazelle, Menzbier's marmot.

Abstract: After the inventory of all rare and endangered species the categories of threat in the Red Data Book of eastern Kazakhstan has changed for most of the species: 24 species were referred to category 1 (endangered species) (in Kazakhstan's Red Data Book 14 species); 26 (14) species to category 2 (decreasing species); 11 (24) to category 3 (rare); and 1 (3) to category 5 (rehabilitated). There are three nature reserves in the region: Markakol, West Alatai, and Alakol to protect wild vertebrate animals.

Abstract: Among species included in the Red Data Book of the USSR, predators occupy the first place; of them, unconditional leadership belongs the cat family species. Nine of eleven species of the family are referred to as rare and endangered ones. In the past snow leopard (Uncia uncia) inhabited all mountains on the south of the USSR from Tien Shan and Pamir to Transbaikalia. Now it no longer inhabits many of its previous habitats and has become rare, everywhere. Its total population in the USSR is no more than 1000 animals. At the beginning of XX century there were cases that such an amount of snow leopard (i.e. 1,000) was hunted during one year. Until recently, hunting the species was allowed all year round and even encouraged.

Abstract: In a popular form, it tells about rare vertebrate animals included in the Red Data Book of the USSR, their biology, behavioral patterns, threats and measures being taken to protect them. Total number of snow leopard in the USSR is defined as 2,000 animals. 200 snow leopards live in zoos throughout the world. The animals successfully reproduce themselves in the Moscow, Kaunas, and Alma-Ata zoos. Snow leopard's maximum life expectancy in enclosures is 22 years.

Abstract: In Tajikistan it is necessary to preserve big predators listed in the Red Book, such as Uncia uncia, Ursus arctos isabellinus, Hyaena hyaena, Felis lynx isabellina, Panthera pardus ciscaucasica. An anthropogenic influence has resulted in the species' habitat shrinkage, deficit of food, disturbance of trophic interactions. It is necessary to restore a tiger population in the Tigrovaya Balka nature reserve, and resolve the issue of protection and sustainable use of commercial predatory species.