Not questioning your belief, but
Pigs are smarter than dogs, and cows are smarter than horses. Some argue that cetaceans are smarter than humans.
So why do we eat beef and pork, but not dog and horse (in most societies, anyway)?
If I can kill it, I'm smarter than it is. The real issue is that pigs are tastier than dogs, and I've never eaten horse, but I doubt it's as tasty as beef. If I can kill it, it's delicious and I'm hungry . . .
All this talk about Japanese fish, playing chicken, beef and pork is making me too dang hungry. I'm going for breakfast.
Make that a low-carb breakfast that is high in animal protein. I always do.
;^)