Quote 64
Dazed, suffering intolerable pain from throat and tongue, with the life half throttled out of him, Buck attempted to face his tormentors. (1.21)
After he is first taken from his life in California, Buck’s suffering causes him to try to fight against his captors.
Quote 65
For two days and nights this express car was dragged along at the tail of shrieking locomotives; and for two days and nights Buck neither ate nor drank. (1.24)
Hunger plays an important role in the hardships Buck suffers.
Quote 66
He did not mind the hunger so much, but the lack of water caused him severe suffering and fanned his wrath to fever-pitch. For that matter, high-strung and finely sensitive, the ill treatment had flung him into a fever, which was fed by the inflammation of his parched and swollen throat and tongue. (1.24)
Hardship takes an immediate toll on Buck, affecting the way he thinks and acts.