Re: Playing tips
Thor was really aggressive when we got him (I mean launching himself at me from across the room type aggressive) and we weren't having that. We've gently used the pinning move a couple times, which he gives up to quickly, and the squirt bottle a few times. He really dislikes the squirt bottle so all we have to do now is point at the bottle and he calms right down. We can play tug of war and other games with him now with no issue and he no longer attacks legs and feet...the difference is night and day.
Otherwise if it doesn't need to get to that point...sometimes just replacing your hand/foot/leg with a chew toy distracts them enough :p