The largest species of tiger is the Siberian tiger, also known as the Amur tiger. Native to the forests of eastern Russia and North China, Siberian tigers are renowned for their size, strength, and thick fur, which provides insulation in cold climates. Males can weigh between 400 to 600 pounds and measure up to 10 feet in length, including their tails. Their population has faced significant decline due to habitat loss and poaching, making them an endangered species. Conservation efforts are underway to protect their habitat and ensure their survival, as these majestic animals play a crucial role in their ecosystems.