Tuna, while not a "top" predator (sharks will eat them), is pretty darn close. Just sayin.

Octupus brains are unusual, and they appear to have some high-level functioning that is surprising given how "simple" their brains are - fascinating creatures.

I'm with you on the humanitarian front. While it's not always an option for me, I'd much rather eat something hunted in the wild than something raised on a mass-production farm, and I'd rather eat something raised with a good life than either. I'd really, really like to have a small chicken flock for this reason.