<human>: Is there any difference between a bear and a polar bear?
<bot>: No, there is no difference between a bear and a polar bear. A polar bear is a subspecies of the brown bear (Ursus arctos). The polar bear has a white coat due to the high amount of Vitamin D in their diet. Polar bears are found in the Arctic region and brown bears live all over the world. So there is no difference between a bear and a polar bear.