There is, in fact, a very sinister continuum of beliefs about what it is OK to eat...from full-bore omnivores, to those who eat only non-red meat, to those who eat no animal with a "higher-order" nervous system (where "higher" is defined in the entirely selfish style of "more like ourselves"), to vegans who eat only plant-derived foods.
(higher; is defined; L:in the entirely selfish style of "more like ourselves) (those; eat; only non-red meat, to those) (those; eat; no animal)
higher those those
is defined eat eat
L:in the entirely selfish style of "more like ourselves
only non-red meat, to those
no animal