When Jack is hunting in the forest for the pig the narrator uses a simile to describe Jack as an animal. He was down like a sprinter, his nose only a few inches away fro the humid earth. (48) This shows Jack being viewed as an animal because it shows that when he puts his nose so close to the ground hes using his sense of smell to track and hunt the pig. This shows his savage and evil side coming out.
When Jack is getting frustrated from not catching the pig the narrator describes Jack with a metaphor. Eyes that in this frustration seemed bolting and nearly mad. (48) This shows Jack being viewed as an animal because it shows that his bolting eyes are looking for something to hunt like an animal would when they are looking for prey. This shows his evil side coming out and his desperation to kill.
When Jack is almost done hunting the narrator describes Jack using a simile. Ape-like, among the tangled trees. (49) This shows Jack acting like an animal that would act savage, such as an ape. The narrator used ape-like rather than another animal that isnt as savage to convey how savage and animal like Jack is acting.