The use of flush here creates an image of Hyde’s anger manifesting physically, almost like a visceral, uncontrollable outburst.
Suggests that Hyde’s emotions are immediate and intense, further reinforcing his impulsive, volatile, irrational and unpredictable nature.
Animalistic verb when associated with a human, suggests a wild, uncontrollable emotion like anger or hostility - Conveys aggression and a lack of civility, emphasizing Hyde’s inhuman and violent nature.
“savage” suggests something brutal and untamed, akin to the behavior of a wild animal.#
Snarl and laugh are defensive and hostile reactions, suggesting Hyde’s paranoia and self-preservation instinct.
His laughter could symbolize a mocking of societal norms and expectations, signaling his rejection of civility.