Bears are fun to watch. They walk with diligence and make sure they are not going to make any foolish decisions. Different kinds of bears have gotten different characteristics based on the geographic nature. They turn very aggressive sometimes, especially with the enemies. The above-featured mug carries a bear illustration looking very surprised at what he is seeing. No wonder why polar bears have become brand ambassadors for the global warming campaign. Because it is the most endangered species in our times which requires our attention and action.