Octopus farming in the U.S. would be banned under a new bill in Congress
npr.org
npr.org
I heard of someone training Pacific Tree Octopi to pick cherries; but i don't suppose that's technically "industrial".
(But also this argument is a losing one for most not vegetarians, because in difference to what is often believed both cows and pigs are also relative intelligent. Like if I remember correctly cows are roughly as intelligent as a 7 year old kid.)
Maybe a 7 month old, but surely not a 7 year old.
These animals get a lot of hype for their intelligence lately, but surely cows and horses are more intelligent, yet still farmed and eaten.
Sentience seems like a weak argument though. If in the far future we encounter aliens with superior intelligence, would that make it OK for them to farm us?
Yours is my go-to thought experiment for why some arbitrary intelligence bar doesn't give us lease to eat animals. That and the even more obvious, can I eat really dumb people?