A separate subject. So what? Is that a rationalization to make it OK? Because, if rationalizations are OK, then this whole problem of evil goes away. Most life consumes bacteria, microbes and plants. Only a tiny few consume other pain-feeling animals. To suggest there is merely a semantic definition between what a gazelle experiences and what a petunia experiences is to jump down the rabbit hole into existential paralysis. No pondering. They have certainly achieved a qualitative level beyond animals, yes. The invention of Right and Wrong, among other things.