Tigers are the largest species of cat in the world, outranking both African and Asiatic lions. Among tiger subspecies, the Siberian tiger is the largest, reaching nearly 11 feet in length and weighing 660 pounds.
Siberian tigers live in the birch forests of eastern Russia. Smaller numbers are found in China and North Korea. While the extreme cold of the Siberian tiger's habitat is daunting compared to that of other subspecies, the large territory, the lack of human presence and the volume of game provide ideal conditions. All tigers are solitary animals and mark their territory through scent. Tigers mostly avoid humans unless they are provoked or are unable to hunt normally.