You decided to stop eating octopus, because they're very smart animals. Which is understandable to me. But why do you decide what animals to eat, based on how intelligent they seem to us? If we turn that argument around, it's okay to eat an animal if its 'dumb'. Why is that so?
To show my perspective, I am becoming more vegetarian the more time passes, because I just can't justify anymore how we treat animals which are meant for comsumption - Forcefully impregnating them, taking their kids away, keeping them in cages yada yada yada. Which means that for me it does not matter how subjectively or objectively intelligent an animal is, same as how I don't treat humans based on their intelligence. Mostly. Of course, if I have to explain something to another human, my explanation will vary on how intelligent they seem to me. But I think you know what I mean :)
As far as I know, pigs are extremely intelligent. Maybe not on the level of an octopus, but still. So, do you eat pig?
And to end, I am not trying to accuse you of any wrongdoing or whatever, its just very interesting to me and I want to talk about it.