Playing cubs are strikingly boylike in their ways. They tumble and roll about with lively energy. Their boxing is a ludicrously earnest show. Standing up they clinch, struggle, break away and watch for a new advantage. They strike first with one paw, then with the other, then with both at once. They come close, dodge, and jump back; they hold one paw high and the other low; sometimes they guard the face with one arm while striking with the other. Often they strike wildly, evidently intending to miss; they bristle up, growl, and have great fun, pretending to be more in earnest and terrible than they really are. No two boys ever had more excitement and fun swimming in a river than did two cub bears whom I once watched. These cubs raced, splashed, and pushed one another under the water. They dived and swam beneath the surface and from a bowlder plunged into it with terrific splashes, sometimes forward, sometimes backward. One of the happiest incidents which I have seen in the grizzly bear world was a mother grizzly who had discovered some honey in a standing dead tree, perhaps five or six feet above the ground. Tearing open the edges of the hole, she helped herself to a quantity of the honey, then called her two cubs, who were playing a short distance away. They needed no second invitation when they saw mother standing on hind legs and leaning forward with fore paws against the trunk of the tree. Up the incline of her back they raced merrily, and, standing upon mother's head, they ate with eagerness this wonderful feast of honey. The cubs den up with their mother the winter following their birth. The mother is their companion until they are a year and a half old, sometimes longer. During their second summer she commonly leaves the cub--or cubs, as the case may be--to make their way in the world alone. Once the family ties are broken, the grizzly is seldom seen with other bears. If two, three, or four in number, the yearlings run together another year, and are chummy and inseparable. One becomes the leader and is followed faithfully. If trouble arises, they are united and devoted little people. To kill or injure one of the youngsters means that a hunter is promptly charged by the others, and often killed or injured. The cubs are great ramblers. They may wander through unoccupied regions and over the territory of other bears. They are not considered intruders by other bears. There are numerous interesting incidents in the companionship of these year-olds, and sometimes of two-year-olds, who have explored miles of territory, chased animals, played, and enjoyed themselves together, and in moments of danger united and fought the enemy. Yearling bears den up together the second winter and occasionally also the third winter. Generally, however, after the second winter, that is to say, when two and a half years old, they separate. From this time on the grizzly lives alone.