you mean you don't think it's right to make a creature take an IQ test before deciding to eat them or not? "Yes, right, well, you seem sufficiently stupid enough to ingest."

There are hazards to doing it on an individual level, but on a species level sure why not? Between a talking plant and a brainless bovine I know which one I'd say is the obvious right answer to eat (assume both species occurred naturally for this thought experiment).