The Siberian Tiger (Panthera tigris altaica), also known as the Amur tiger, is a tiger subspecies inhabiting mainly the Sikhote Alin mountain region with a small population in southwest Primorye province in the Russian Far East. In 2005, there were 331–393 adult and subadult Amur tigers in this region, with a breeding adult population of about 250 individuals. The population had been stable for more than a decade due to intensive conservation efforts, but partial surveys conducted after 2005 indicate that the Russian tiger population is declining.
The Siberian tiger is reddish-rusty, or rusty-yellow in color, with narrow black transverse stripes. The body length is not less than 150 cm (60 in), condylobasal length of skull 250 mm (10 in), zygomatic width 180 mm (7 in), and length of upper carnassial tooth over 26 mm (1 in) long. It has an extended supple body standing on rather short legs with a fairly long tail. It is typically 5–10 cm (2–4 in) taller than the Bengal tiger, which is about 107–110 cm (42–43 in) tall.
The geographical range of Amur tigers in the Russian Far East stretches south to north for almost 1,000 km (620 mi) throughout the length of Primorsky Krai and into southern Khabarovsk Krai east and south of the Amur River. They also occur within the Eastern Manchurian mountain system, which crosses into Russia from China at several places in southwest Primorye. In both regions, peaks are generally 500 to 800 m (1,600 to 2,600 ft) above sea level, with only a few reaching 1,000 m (3,300 ft) or more. This region represents a merger zone of two bioregions: the East Asian coniferous-deciduous complex and the northern boreal complex, resulting in a mosaic of forest types that vary with elevation, topography, and history. Key habitats for the Amur tiger are Korean pine broadleaf forests with a complex composition and structure. The faunal complex of the region is represented by a mixture of Asian and boreal life forms. The ungulate complex is represented by seven species, with red deer, roe deer, and wild boar being the most common throughout the Sikhote-Alin mountains but rare in higher altitude spruce-fir forests. Sika deer are restricted to the southern half of the Sikhote-Alin mountains. Musk deer and Manchurian moose are associated with the conifer forests and are near the southern limits of their distribution in the central Sikhote-Alin mountains.
Siberian tigers are known to travel up to 1,000 km (620 mi), a distance that marks the exchange limit over ecologically unbroken country.
- In-game, it is possible for the African Lion to mate with a Siberian Tiger/Bengal Tiger, creating a Liger or Tigon (a liger is a male lion and a female tiger, and a Tigon is vice-versa). A male Tiger can also mate with a Tigon to create a Titigon. It is also able to mate with a Bengal Tiger to create Siberian-Bengal Tigers.
- Shelter: Big Cat Cave, Snow Cave
- Enrichment: Big Cat Rock, Cardboard Box, Horse Dummy, Ice Block, Live Prey, Scratching Post
- Animal Food: Meat