So things are going really well with our newest family member. He follows house rules, settles down, is responsive during training, mostly walks on a loose heel and is wonderful with our 1 year old daughter. But during the last 2 months or so he keeps having little biting fits that I'm starting to worry he will never grow out of. Basically if I stop him from doing something he wanted to do, he will just start nailing me with quite hard bites. Normally the situations arise when we go for a walk. For example he will try to pick up a stick, but I will keep walking and he will get in a mood about not being able to get it. Or I will let him greet someone on the street for a few moments and then call him back to me, reward him and then prevent him from returning to the other person. When he jumps to bite me i stay calm, tell him no and try to give him a correction and prevent him from actually getting me. Its a tricky move and he often manages to bite me a couple of times which I worry is reinforcing. He wears a normal flat collar but I leave it high and tight during walks to help make corrections effective. Sometimes he will only stop if I snap his collar so hard he gags or something comes along to distract him from attacking me. Normally I am able to re-engage with him and he returns to being absolutely lovely, but I'm. Sick of being bitten! Is this normal teenager behaviour? Advice on corrections or how to handle the fits? Thank you!