The hen was heavy, for so spindling a killer. But Bobby’s overshot jaws held firm. He dared not pause to eat his kill, until he should be safe away from the shouting man.

Stumbling into his platform den, half dead with hunger and fatigue, the dog sought his bed of leaves. And there he feasted, rather than ate. For never before had he known such a meal. And when the last edible morsel of it was gorged, he snuggled happily down in his nest and slept.

Poultry bones are the worst and most dangerous fare for any domesticated dog. Their slivers tear murderously at throat and stomach and intestines; and have claimed their slain victims by the hundred. Yet, since the beginning of time, wild animals, as foxes and wolves, have fed with impunity on such bones. No naturalist knows just why. And for some reason Bobby was no more the worse for his orgy of crunched chicken-bones than a coyote would have been.

He awoke, late in the morning. Some newborn sense, in addition to his normal fear, warned him to stay in his den throughout the daylight hours. And he did so; sleeping part of the time and part of the time nosing about amid the flurry of feathers in vain search for some overlooked bone or fragment of meat.

Dusk and hunger drove him forth again. And, as before, he sought the farmstead which had furnished him with so delicious a meal. But as he drew near, the sound of voices from indoors and the passing of an occasional silhouette across the bright window shades of the kitchen warned him of danger.

When, as the kitchen light was blown out, he ventured to the chicken coop he found the door too fast-barred to yield to his hardest scratch. Miserably hungry and disappointed he slunk away.

Three farms did Bobby visit that night before he found another with an unlatched henhouse door. There the tragedy of the preceding evening was repeated. Lugging an eight-pound Dominic rooster, Bobby made scramblingly for his mile-distant lair. Behind him again raged sound and fury. The eight-pound bird with its dangling legs and tail feathers kept tripping up the fleeing dog; until, acting again on instinct, Bobby slung the swaying body over his shoulder, fox-fashion, and thus made his way with less discomfort.

By the third night the collie had taken another long step in his journey backward to the wild. When a dog kills a chicken every one within a half mile is likely to be drawn by the sound. When a fox or wolf or coyote kills a chicken, the deed is done in dexterous silence; with no squawks or flurry of feathers to tell the story. Nature teaches the killer this secret. And Nature taught it to Bobby; as she has taught it to other gone-wild dogs.

As a result, his depredations, thereafter, left no uproar behind them. Also, he learned presently the vulpine art of hoarding;—in other words, when safety permitted, to stay on the ground until he had not only slain but eaten one chicken, and then to carry another bird back to his lair for future use. It cut down the peril of over-many trips to neighbouring coops.

In time, he learned to rely less and less on the close-guarded chickens in the vicinity of his den, and to quarter the farm country for a radius of ten or more miles in search of food. The same queer new instinct taught him infinite craft in keeping away from humans and in covering his tracks.