Bengal and Siberian are subspecies of tigers (Panthera tigris). Bengal tigers are found mainly in India, while Siberian tigers are found in Russia. They are both endangered species due to habitat loss and poaching. Bengal tigers are generally smaller and have a lighter coat with more pronounced stripes, while Siberian tigers are larger and have a thicker, paler coat with fewer stripes. Both subspecies are important to their respective ecosystems and efforts are being made to protect and conserve them.