Siberian Tigers are the world's largest cats. They live primarily in Eastern Russia's birch forest, though some exist in China and North Korea. Their fur is usually pale orange brown, with black stripes. They are paler than most other tigers. The fur on the belly and chest is white, with black stripes. They have a white ruff around the neck. They are only about 400 of these magnificent tigers left in the world, and they are an endangered species.