I'm sure it is all normal but wanted to get some feedback from everyone concerning the whole biting and chewing problem. Our pup is now 9 weeks old and goes through these spells of just wanting to attack and chew on everything he is not supposed to! Carpet, sofa, wood, stone, people...when he bites at us, we have been using the "yelp" tactic, which was very effective at first but has now seemed to have worn off. It doesn't really faze him much. Have tried a can with coins in it - that also was effective for a day, but now does not have much effect. When attacking other things he shouldn't, we are say "NO" and moving him away from the item. He's just relentless. We also have tried the bitter apple spray, which seems to work, but just causes him to move on to another target! I'm sure it will be a matter of time until he gets over this, but curious at what age this starts to dissipate. I hate to be constantly telling him "NO, NO, NO, NO, NO, NO"....but how else can I get him to stop him from biting on things he shouldn't? Other than this, he is doing real well - no accidents in the house for the past 5 days, is good when going to his crate and only cries for a bit until he realizes it's not getting him anywhere. Usually still getting us up twice through the night to go outside. He knows how to sit, come when called, and has now learned to scale the gate between the kitchen and living room. He's like a spider-dog. This unfortunately was not a trick I wanted him to learn! Hope everyone is well. Thank you for any advice.