dominant behavior

Hi there, Matilda is 6 months old and I have been working on teaching her not to jump up and it's going pretty well but I am reading different information about it and have some questions. Some articles say that the dog jumps up to show dominance and others say that it's just that the dog...

My wife and I are encountering aggressive puppy-biting from our 12 week, 24 lb pup Loxy. When she is tired she is a sweet heart, but when she is awake, she is turning into a demon, especially when she is overtired, and especially when she is alone with my wife....who has had it. We do the...