What was the other name for the extinct tiger subspecies, which inhabited the sparse forests and riverine corridors west and south of the Caspian Sea, from Turkey, Mesopotamia, Iran and the Caucasus, that has a project reestablishing populations of the Siberian tiger by introducing them as replacements to the extinct tiger?
Siberian Tiger Introduction Project The Siberian Tiger Introduction Project involves reestablishing populations of the Siberian tiger ("Panthera tigris altaica)", also known as the Amur tiger, in their former range and also expanding their range by introducing them as replacements of their genetically similar relative, the extinct Caspian tiger ("Panthera tigris virgata") which inhabited Central and Western Asia. Currently, the Siberian tiger inhabits the cold mountains of the Russian Far East and northern China.
Hokkaido wolf The Hokkaido wolf ("Canis lupus hattai"), also known as the Ezo wolf (Japanese: エゾオオカミ（蝦夷狼）ー , Hepburn: Ezo Ōkami ) and in Russia as the Sakhalin wolf, is an extinct subspecies of gray wolf that once inhabited coastal north-east Asia. Its nearest relatives were the wolves of North America rather than Asia. It was exterminated in Hokkaidō during the Meiji Restoration period, when American-style agricultural reforms incorporated the use of strychnine-laced baits to kill livestock predators. Some taxonomists believe that it still survives on Sakhalin island. It was one of two subspecies that were once found in the Japanese archipelago, the other being the Japanese wolf.