Thor heard a third shot--and that was all.
While the reports were still echoing among the crags and peaks something struck Thor a terrific blow on the flat of his skull, five inches back of his right ear.

It was as if a club had descended upon him from out of the sky.

He went down like a log.
It was a glancing shot.

It scarcely drew blood, but for a moment it stunned the grizzly, as a man is dazed by a blow on the end of the chin.
Before he could rise from where he had fallen the dogs were upon him, tearing at his throat and neck and body.

With a roar Thor sprang to his feet and shook them off.