Bears are carnivorous mammals, the largest of the fissipedes today. They are heavily built, with long and dense fur, large skulls and powerful paws with long claws. Bears are omnivorous, they are good climbers and swimmers and can run as fast as 30 mph (50 km/h). They have an excellent sense of smell, though their vision and hearing is not that good. Bears inhabit the Northern hemisphere, mainly the territory of North America and Eurasia. These animals got adapted to many different climatic zones and landscapes — from steppes to the highlands and from the forests to the icy Arctics. A bear is an important character of Eurasian and North American folklore — it has been considered a forefather, the master of forests and lower worlds.