> But we extincted bison. I believe the word you are looking for is extirpated. They didn't go extinct, they just aren't there anymore. > Don’t we need a graz

> But we extincted bison. I believe the word you are looking for is extirpated. They didn't go extinct, they just aren't there anymore. > Don’t we need a grazing species in these areas? Suppose that depends on your idea of what those areas should be doing.