He had caught the man's scent an hour earlier, as he had stood sniffing at the boat ten feet away from him. The same scent had been on the meat the man had handled.
And now, having played such a cruel trick on him, the joker was actually daring to intrude on The Place!
A gust of resentful rage pierced the dullness of Wolf's brain and sent a thrill of fierce energy through him. For the moment this carried him out of his sick self and brought back all his former zest as a watch-dog.
Down the hill, like a furry whirlwind, flew Wolf, every tooth bared, his back a-bristle from neck to tail. Now he was well within sight of the intruder. He saw the man pausing to adjust something to one of his hands. Then, before this could be accomplished, Wolf saw him pause and stare through the darkness as the wild onrush of the dog's feet struck upon his hearing.
Another instant and Wolf was near enough to spring. Out of the blackness he launched himself, straight for the trespasser's face. The man saw the dim shape hurtling through the air toward him. He dropped what he was carrying and flung up both hands to guard his neck.
At that, he was none too soon, for just as the thief's palm reached his own throat, Wolf's teeth met in the fleshy part of the hand.
Silent, in agony, the man beat at the dog with his free hand; but an attacking collie is hard to locate in the darkness. A bulldog will secure a grip and will hang on; a collie is everywhere at once.
Wolf's snapping jaws had already deserted the robber's mangled hand and slashed the man's left shoulder to the bone. Then the dog made another furious lunge for the face.
Down crashed the man, losing his balance under the heavy impact; Wolf atop of him. To guard his throat, the man rolled over on his face, kicking madly at the dog, and reaching back for his own hip-pocket. Half in the water and half on the bank, the two rolled and thrashed and struggled--the man panting and wheezing in mortal terror; the dog growling in a hideous, snarling fashion as might a wild animal.
The thief's torn left hand found a grip on Wolf's fur-armored throat. He shoved the fiercely writhing dog backward, jammed a pistol against Wolf's head, and pulled the trigger!