Learn about the Siberian Tiger , the world's largest tiger subspecies and wild cat, and its adaptations to the harsh Russian taiga. Discover its scientific classification, behavior, diet, reproduction, threats, and conservation status. The Siberian tiger , a subspecies of tiger , is the largest cat in the world. It averages about 3.3 m (11 ft.) in length, with a tail measuring 1 m (3 ft.). Adult male Siberian tigers can weigh up to 320 kg (700 lb.), while females are significantly smaller, weighing up to 180 kg (400 lb.). Also known as the Amur tiger , the Siberian tiger resides in a small region in the southeast region Russia. They are also located in small numbers in China and North Korea. The Siberian tiger (Panthera tigris altaica) inhabits the region of Siberia in Russia and features several adaptations to endure the harsh climate of the area like a thicker coat and a layer of fat. Learn about the Siberian tiger , the largest subspecies of tiger that lives in eastern Asia. Find out how they hunt, survive, and face threats from poaching and habitat loss.