1: They can do rather complex problem solving:
[link] (this is just one link but this story has been told EVERY-WHERE. I heard it first hand while in Canada)
2: If they get bored, they'll flood your shit just for fun:
[link] 
3: There's a video-taped case of an octopus attacking a diver and immedietly tries to pull his mask and breathing aparatus off first.
[link] 
4: Can open jars:
[link] 
5: are developed enough to use tools:
[link] 
6: Can shapeshit (pretty much) :
[link] 
7: Can communicate with each other in a visual language:
[link] 
8: oh yeah... and they can predict the future. :thumb170527651:
All that combined makes me feel a little uncomfortable eating something that displays that level of intellegence

Same reason I wouldn't eat a dolphin or a primate and also why I don't eat pork.
The only trouble is I have an obsession with takoyaki ....I don't know how to break my love of it ;____; even though I feel dirty every time I eat some XD;; can't we put something else in the center of the dough?