He became quicker of movement than the other dogs, swifter of foot, craftier, deadlier, more lithe, more lean… — Jack London
He became quicker of movement than the other dogs, swifter of foot, craftier, deadlier, more lithe, more lean with ironlike muscle and sinew, more enduring, more cruel more ferocious, and more intelligent. He had to become all these things, else he would not have held his own nor survived the hostile environment in which he found himself.
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He was a ferocious man. He had been ill-made in the making. He had not been born right, and he had not been helped any by the moulding he had received at the hands of society. The hands of society are harsh, and this man was a striking sample of its handiwork. He was a beast.
They were his environment, these men, and they were moulding the clay of him into a more ferocious thing than had been intended by Nature. Nevertheless, Nature had given him plasticity. Where many another animal would have died or had its spirit broken, he adjusted himself and lived, and at no expense of the spirit.
The bulldog's method was to hold what he had, and when opportunity favored to work in for more. Opportunity favored when White Fang remained quiet. When White Fang struggled, Cherokee was content merely to hold on."

