So I posted on a different thread about what kind of Lab do I have, but I have a concern far more now, as I am a new Lab owner. We got our lab at 14 weeks old 5 days ago. Yes, still new but I am trying to stay on top of everything. I am expirenced with dogs, but I've never owned a big pup, and our new Lab Scooby will be. My fiance is only used to big dogs and he does great with Scoob. I am home all the time with kids and our new pup so I am able to do everything with him. I want need help and reassurance on behaviors, advice and things to look for. I want Scooby to be a calm and happy adult. I do provide much excersize; he also does not like water. Between the time previous owner got him from 8 weeks until 5 days ago he was in a crate most of the time, got a claw mark on his ear from a cat, and their house was chaos as we could tell when we went to go get Scooby. So giving that, he's a great pup and learning fast. He's not food aggressive or toy aggressive, although he struggles to give back the toy. I want to know if, what I am about to explain below, is normal behavior. Scooby will give playful gestures to our cat Q but low growls repetitively while jumping all over and nipping at him. He started yesterday overly biting my 9 year old (yes I always supervise and never leave Scooby anywhere alone or my kids). When Scooby would do this before my son could stay calm and assertive and say no and he'd listen (or down). But now he starts and doesn't stop no matter how you act or what you do. He's done it to me now too and out of nowhere, just from standing outside having him go potty. He started sniffing my shoe then biting it, I said no bite in the tone he is familiar as a leave it. He proceeded with the biting and biting harder, then my upper leg. If I grab him by his collar gently and calmly he still wants to bite the hay out of me and even growls. Today he was looking out if the window and there's to people across the street working on a house, he started growling. I said nothing but closed the curtain for distraction. Is he showing signs of aggression or is this all normal puppy play and learning. How can I positively resolve this. Will any of this behavior progress as he grows? He is apart of our family. We are still growing to know him, as he is us. He's a big puppy and can be intimidating. Please any help will really be appreciated. Today and everyday... We took a walk, played in the yard, played in the house, gave him down time. He gets worked up out of the blue.