The largest living species of cat is the Siberian tiger (Panthera tigris altaica), also known as the Amur tiger. These majestic cats primarily inhabit the forests of Eastern Russia and parts of China. Siberian tigers can weigh up to 600 pounds and measure up to 12 feet in length, including their tails, making them the largest of all the tiger subspecies. Their powerful build, distinctive orange coat with black stripes, and solitary nature contribute to their reputation as apex predators. Conservation efforts are ongoing due to threats from habitat loss and poaching.