The largest type of cat in the world is the Siberian tiger (Panthera tigris altaica), which can weigh between 400 to 600 pounds and measure up to 10 feet long, including the tail. These tigers are distinguished by their impressive size, powerful build, and beautiful fur, which typically features a pattern of black stripes on an orange to tawny background. Siberian tigers mainly inhabit the forests and mountains of Siberia and are known for their solitary behavior. Unfortunately, these majestic creatures are critically endangered, primarily due to habitat loss, poaching, and dwindling prey populations.