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					Originally Posted by Maximo  Give Guido a place to escape his puppy sister.  When I brought home Teddy, my 2nd dog, he was a wrestler and annoyed Max.  Thankfully Max could escape to the couch where Teddy was unable to jump.
 Teddy slept in an xpen next to our bed for a couple months until Max accepted him sleeping in the bed.  I would put your puppy in a pen and make sure Guido feels comfortable in bed until puppy learns better manners.
 
 Keep working on the 'no bite' with your puppy.  Sort of let the dogs work things out between themselves, unless things look dangerous.  When things looked really bad with my wild boys, I clapped my hands and bellowed "No!" to break it up.  The boys know that means to stop and sit down.
 
 Try to redirect focus to constructive play, and give the puppy plenty of exercise to drain energy.  Whenever my boys started getting out of hand, I would redirect them to 5 minutes of performing tricks for kibbles.  Or we would play fetch.
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  Very good suggestions.  
 
 
I don't think the behavior is necessarily dominance but more likely inappropriate puppy play.  Guido just might get mad and let her have a good nip back one of these times.  Which is not a bad thing either.  Momma dogs correct their puppies to keep them in line too 
