i know this things are amazingly smart, so...i'm going out on a limb and suggesting my octo is messing with me! here's why: for the last 2 weeks he's been seeing me remove crab carcasses that he's left behind. since then, when i'm home during the day working on my comp, he'll come out and chase 2-3 crabs, catch one and strangle it, but not eat it! he'll just release it and go back to his lair and watch me remove it (don't want dead stuff in there, right?). i feel like he's playing around with me knowing i'm removing every dead crab whether eaten or just dead (and trust me a LOT die in a tank). or maybe he's just bored and i'm giving him too much credit?