I'd speculate that if you did an identical breeding experiment with octopuses (as in, the breeding criteria of non-aggressively interaction with human hand) you'd breed for curious, bold, or playful octopuses which tend to approach novel stimuli ... but not friendly in the sense of affectionate.
It's not that they're asocial, I think they sometimes lay eggs cooperatively and obviously seek each other out for mating... but primarily octopuses see others of their species as predators or prey. (I mean, cats do eat each other but only in bounded contexts, like infanticide, not hunting.)
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.