
Hi Angelz,
Firstly, you're doing
much better than me - my little guy turned 12 weeks yesterday and doesn't sit, stay, lie down - zippo, zilch, nadda LOL! But then to be fair I haven't even tried :) He knows his name, comes back about 50% of the time as a coincidence when with the others and around 25% on his own decision so I'm getting there and house training has been very simple, particular with the awful weather up here (central Scotland).
Where I have made progress is on the biting, yep, even the "snarling darlings" can be overcome but it does take not only patience but consistency too. I notice you've tried a variety of measures and I think therein lies the problem - you really would be better deciding on ONE course of action and sticking with it religiously (requires full co-operation of the entire household too of course!)
What I would say is please DO NOT, under ANY circumstances, go down the route of scruffing and pinning - you'll only frighten him and not necessarily into stopping the behaviour but possibly escalating it.
Personally I say "Ah, ah" in a firm, sharp tone when my pups are at this stage - some will respond appropriately to high pitched "ouches" or "yelps" but the tone can make it more exciting hence why I now favour a more disciplinarian deep tone. I don't manhandle them in any way, even to remove them, as this only extends interaction. Equally if I'm trying to sit and watch TV I can't honestly say I'm best impressed with standing up and turning my back or me leaving the room - I just sit my ground, say "Ah, ah" and then ignore him :) It's worked for me with 6 dogs so far and a litter of 8 pups before 7 left for new homes so I think it's fair to say I can confidently recommend the approach as effective.
HTH you too! Teri :)