Polar bears resorted to cannibalism

    The global warming has already changed polar bear’s habits and behavior, sometimes to an extraordinary degree. There have been reports of famished polar bears resorting to cannibalism when they can find nothing else to subside on. Polar bears are accustomed to live and migrate on the pack of sea ice; after the Arctic ice becomes too thin to live and migrate; polar bear are forced to resort to the land for survival. But Dercher shows that “polar bear lose about a kilogram per day when they are stuck on land”. In January 2004, a male polar bear rushed into a mother polar bear’s den and surprise attacked the mother polar bear. This fierce male polar bear turned over the top of the den and bited her head and neck few times, then he drugged her dead body to the 75 meters far place, and began to eat her body. The den had collapsed upon the mother polar bear’s two cubs, and they were both choking to die (Stirling). Steven C. Amstrup, a polar bear scientist with the U.S. Geological Survey says that, despite the cannibalism was happened before, but such events like killed a female polar bear in postpartum were never recorded in the past in Arctic North (22-23). The other evidence shows polar bear is resorted to cannibalism as well. On December 8, a team of American scientists published a set of pictures which shows a adult polar bear is hunting a polar bear cub in Manitoba, Canada. There are already have seven cases which polar bear is going to hunt cubs which happened this year. The biologist Ian Stirling in Canada environment department indicates that this is the first time finding so many cannibalism among polar bear since he attended his science job (269). Scientists find that polar bear are going hungry for long period of time in summer, In addition, the sea ice is forming several weeks later than ever as well as getting thinner which causes polar bear hardships in their hunt.