Hey, it's been awhile since I've posted. I forgot my password, and didn't feel like dealing with it, and just never really felt the need to come back. lol But, now I need some advice. So, we've had our dog Rigby for 3 1/2 years now, and he's been a GREAT little dog. He and my son are buddies, and get along just fine..........but........within the last week or so, he's all of a sudden started growling and snapping at him. He acts like he doesn't like him, and won't let my son near him. The other day he was laying on the couch, and as my son approached him, he rolled over on his back. He went to pet him, and he snapped at him and tried to bite him! Whenever he approaches him, he growls and curls his lips. My son has always been good to him, and I can't figure out the sudden change. A friend of mine pointed out that my son is getting close to puberty (he's 12 1/2) and dogs can detect fermone and hormone changes. I never thought of that! So, my questions......is it really true that they can detect that, and if so, how do we handle it?? I'm thinking of signing them up for obedience classes. But, until then, what do we do when he does that? I hate to scold him, because he's only acting on instinct, and isn't really doing anything "wrong." He's detecting the changes, and trying to establish dominance. So......any advice??