The coyote stalks patiently, hiding until a dog comes close or is too far from his hole to outrun the coyote to it. Coyotes hunt in pairs or fours and often while one, two, or three of them are holding the attention of the dogs the other coyote makes a sudden dash. Sometimes they take sheer delight in stirring up things in congested corners of dog town. As I stood watching them, screened by the cottonwood, two coyotes crossed the corner of dog town and set it all agog. While these coyotes made their way leisurely through dog town the dogs sat on their crater-like mounds and uttered rapid-fire protests, ready to drop into safety in case of a rush by the coyotes. Suddenly two old dogs wheeled and yapped at highest rattling speed. While the first pair of coyotes was attracting attention a second pair appeared. The old dogs violently denounced the second pair for this surprise. But the coyote is ever doing the unexpected. On the outskirts of Cactus Center numerous pairs of coyotes had enlarged prairie dog holes for a den. Pairs of prairie owls occupied other deserted dog holes, rabbits possessed many, and two were taken by skunk families. The black-footed ferret is the terrible enemy of prairie dogs. This small, agile, powerful fellow boldly invades the dens and slays the dog, rabbit or other inmates. The dogs do not appear even to attempt to resist him. But apparently he does not often call. The mixed population of dog towns is not at peace. Lizards, rabbits, dogs, owls, snakes congest in the same block, but the block is red in tooth and claw. In a few cases I noticed these warring species all used the same subway entrance, but below the surface they surely lived in separate apartments. No, the rattlesnake, prairie dog, and owl do not lie down together, unless a flood or other calamity throws them together. One time I was approaching a town limits where yelpings and yappings filled the sky like a wind. From the summit of the ridge treeless, houseless, fenceless plains extended in leagues of level distances to every horizon. Before me there must have been one hundred thousand dogs swarming like the inhabitants of a disturbed ant hill. Beside a lone and grizzled old cottonwood I explored localities of dog town through my glasses. Cloud shadows were sliding in silence across the green plains in which the golden banner bloomed like broken yellow coral. A cottontail hopped slowly from his hole to a clump of Spanish bayonet; buzzing gnats and bees hummed by. Grasshoppers all jumping toward the town limits suggested that they were abandoning the congested town. Suddenly there were two disturbances: Near me an old dog was set upon by a protesting, noisy mob of dogs, while off on my left an invading rattlesnake threw a locality into a frenzy of excitement.