The opinion is prevalent that the movements of the Bear are awkward and slow and that they are neither fleet nor active in locomotion. This is true, to a certain extent, in the case of the larger species, though they are endowed with great endurance. On the other hand the smaller species are notably quick and active in their motions. In fact all species when excited will pass over the ground at a rapid rate, their strides resembling a sort of gallop. All climb, especially when young or until their great weight prevents them from doing so. A few of the species are excellent swimmers and can remain under water for some time. The Polar Bear well illustrates this characteristic, for it has been seen many miles from the shore, swimming easily and showing a wonderful power of endurance. [Illustration: ] We are told that “some species are sensible and sagacious and may be trained to a certain extent; but they exhibit no high mental development. Some individuals become very tame, though they display no particular affection for their master and keeper. They always revert to their grosser animal instincts in old age, for then they become wicked, intractable and violent. The Bears signify their various moods by modulations of their remarkable voices, finding utterance in dull growling, snorting and murmuring, or grunting, whistling and sometimes barking sounds.” A family of young Bears consists of from one to six, which are fed and protected in the most tender manner by their watchful and careful mother. Born naked and blind, it is usually five or six weeks before they can see and have a seasonable coat of hair. After this, they are full of life and very playful, and their antics are very amusing. Bears may be classed under three groups; the Sea Bears, the Land Bears and the Honey Bears. The Polar or White Bear is the only representative of the first class. This species has been wonderfully provided for by Nature. Living as it does in the regions of perpetual ice and snow, the pure white color of its fur becomes a protection, as it is less easily observed. It also, unlike the other species, has the soles of its feet covered with hair which enables it to move more freely and safely on the ice. They have been noted at a distance of fully fifty miles from the nearest shore, swimming without effort and showing no fatigue. One of the best known of the Land Bears is the Brown Bear of Northern Europe and Asia. It varies greatly and some authorities divide it into several distinct species. It is easily tamed and because of the ease with which it supports itself on its hind feet it is often taught to step to the sound of music. Here also is classed the Grizzly Bear, which is nearly as large as the Polar Bear and much more ferocious. It has been known to attack the bison and carry a body weighing one thousand pounds or more to its den some distance away.