Our 6 month old male Echo, has started excessively biting. Not hard enough to draw blood but hard enough to leave marks and some bruising. When he was much younger we used the "no bite" command and say "give kisses" and then praise him for it. Now all of a sudden our commands aren't working and its like he is bullying me and my 5 year old daughter. He does it when you try to hook a lead or leash to his harness to go out or just wanna pet him or even he will jump up on you and then start biting. With My husband, he seems to only do it when he is excited and diverting his attention to a toy keeps it from happening. But for my daughter and I, that doesn't work. It gets to a point where I end up so frustrated and have to yell and then try to corral him into his crate to break his state of mind. Only to let him back out and the behavior will start again. Has anyone else experienced this? What can we do to get him to understand his commands again. I try treats when he does listen and praise him as often as I can which isn't much considering the biting has gotten worse. Are there any tips to this or is this normal at this age? I am afraid he will bite hard enough to really do damage and i don't feel comfortable with him around my daughter due to him jumping up and almost biting her face. He doesn't show any aggression as far as snarling or growling or becoming possessive over something. HELP!!