The pool itself, muddy and discolored from the sluice boxes, effectually hid what it contained, and it contained John Thornton; for Buck followed his trace into the water, from which no trace led away.
All day Buck brooded by the pool or roamed restlessly about the camp.
Death, as a cessation of movement, as a passing out and away from the lives of the living, he knew, and he knew John Thornton was dead.

It left a great void in him, somewhat akin to hunger, but a void which ached and ached, and which food could not fill, At times, when he paused to contemplate the carcasses of the Yeehats, he forgot the pain of it; and at such times he was aware of a great pride in himself,--a pride greater than any he had yet experienced.

He had killed man, the noblest game of all, and he had killed in the face of the law of club and fang.
He sniffed the bodies curiously.

They had died so easily.

It was harder to kill a husky dog than them.