Hunter B. invited his friend

Hunter B. invited his friend

Hunter B. invited his friend N. to watch the wolf hunt. Arriving at the place of hunting, B. and N. drank alcohol, and then quarreled. The quarrel turned into a fight, during which B. inflicted a serious wound on N.´s leg, and then left. N. also tried to go home, but could not. After some time, the wolves approached the clearing where N. remained. N.’s attempt to climb a tree ended in failure, and he was torn to pieces by a wolf pack.
Are B.´s actions and N.´s death causally related? Is he liable for N.´s death?

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