If you have giant squid in your house, you could have some fairly complicated problems! Giant squid eat not-so-giant squid, and not-so-giant squid like crustaceans. I think the first thing you should do is check down the back of the sofa fOR crusty things that might have fallen, although you may not find any because the smallish squid have all eaten them. If course if you don't see any of the more modestly-sized squid, the giant squid are going to be VERY hungry. The only thing left for them to eat is... OMG!!! GIVE THEM THE DOG AND GET OUT OF THERE NOW!!!