| MadSci Network: Zoology |
There are three internet sites that will help you learn more about tigers and bears. They are: www.tigerking.net & www.polarbearsalive.org & www.geocities.com/RainForest/Vines/2331/ Based on the information I found, I would say that a polar bear is more dominant than a Siberian tiger. I base this answer on the animals' prey and size. Although Siberian tigers do a lot of hunting, their repuation as vicious killers is undeserved. These tigers can eat more than 60 pounds of meat at one sitting. However, they prey mainly on deer, wild pigs, and fish. Polar bears are the world's largest land predators. They are on the top of the food chain in the Arctic. They hunt seals. Their only enemies are human hunters and sometimes other bears. Siberian tigers are found in the Amur-Ussuri region of Siberia and also in northern China and Korea. Polar bears are found in Alaska, Canada, Russia, Denmark (Greenland), and Norway. The world's densest concentration of polar bear birth dens lies off the Siberian coast of Wrangel Island. I found no information that showed that Siberian tigers are found here. I would say that the two species do not naturally coexist. They could coexist if they needed to. Some of the sites given on the top of this answer have maps that show where Siberian tigers and polar bears once roamed. You can compare these to find out if these animals have ever crossed paths.
Try the links in the MadSci Library for more information on Zoology.