Polar bears are almost entirely carnivores. A polar bear will wait for hours beside a ring seal's breathinghole. They strike by ambush like cats. The bear strikes rapidly with it'spaws. It seizes it's prey with their strong teeth thus dragging them ontothe ice for a meal.
Tigers are the largest living felids.
Tiger'sare much larger than lions. The record male Siberian was 845 lbs. Theirphysique reflects its adaptation for the capture of large prey. Tigersare not found in open habitats like other large cats. Their territory isessentially that of a large, solitary stalk and ambush predator that exploitsmedium to large sized prey inhabiting moderately dense cover.