I never tire of looking at photos of rabbits. These two stop-motion photos of wild rabbits sprinting through the winter landscape are fascinating. Rabbits’ bones are very fragile, though these creatures have great muscular strength, particularly in their hind quarters (as evidenced by their thumping, which is loud). This combination of a light skeleton and well-developed musculature gives them unbelievable agility and speed. My house rabbit, Boxer, is far more solid than these wild rabbits, but he has amazed me at times with his speed and reflexes –his showy demonstrations of flying leaps, high jumps, and mid-air twists of his body as he zooms around our upstairs and, particularly, in his playpen outdoors.