Apologies for being a bit pedantic, but I had never heard of the phrase 'keystone species' and went on to look it up. While an elephant could be (and perhaps is) a keystone species, I don't find that the status of being such a species is relevant for discussions on consciousness of animals because of what this term actually means and includes. Starfish, for example, could be considered a keystone species.

Not trying to be a jerk or anything (I'm also a vegetarian) but just wanted to bring this up in case anybody else was a bit curious about what the term meant or had maybe heard of the term before and was confused as to why it was included here. I'm also clearly open to a arguments discussing why a keystone species is inherently conscious.