Percy Shelley was a committed and vocal vegetarian, and wrote two articles on the subject
Conservative voices such as some of the literary magazines saw this (along with his atheism and the fact that he didn’t drink alcohol) as a sign of Percy Shelley’s unnatural and uncivilised behaviour
Vegetarianism, however, rose to prominence during the Romantic period despite these negative voices
Romantic vegetarians often saw meat eating as a sign of man’s Fallen nature: i.e., they felt that Adam and Eve didn’t eat meat in Eden
it is an important part of the creature’s identity. While he does seem to eat the remnants of some meat he finds cooked by a fire, he makes it clear that he will not kill animals for food.
His words suggest that he views vegetarianism as a moral choice, and one that separates him from humanity – a deliberate act of separation
“My food is not that of man; I do not destroy the lamb and the kid to glut my appetite.”
This might be used alongside the point about Victor hiding himself from his father as a way of viewing Victor as a fallen – postlapsarian – figure, and the creature as having possessed the potential to be an example of prelapsarian innocence.