The next day he was filled with a quiet but brooding expectancy.

He resented the intrustion of the strange footprints.

It was, in his process of instinctive reasoning, an encroachment upon the property rights of his master, and he was--true to the law of his species--the guardian of those rights.
The fourth evening after the stranger's visit to the cabin Jolly Roger was later than usual in returning from Cragg's Ridge.

Peter had been on a hunting adventure of his own, and came to the cabin at sunset.

But he never came out of cover now without standing quietly for a few moments, getting the wind, and listening.