Squeegee is just now 5 months old. He still has accidents in the house sometimes but seemed to be learning really well. He has learned the go potty command outside and had started going to the door when he needed to go out. He would sit there and look at you until you let him out and if you didn't notice he would go right by the door. He learned no and would stop being naughty if you told him to. He had stopped the rough play biting, he would mouth every now and then but wasn't biting your arms, etc when you were playing with him like he used to. Anyway, it seems like the last few days he has been regressing. He has been going potty on the floor multiple times every day right in front of us, not even bothering to go to the door. He has started running all around when we go outside and acting like he hadn't even heard me tell him to go potty. He's been chewing things up inside and biting like a wild man! I don't know what could have caused this sudden regression? We will, of course, continue to be consistent with his training and I am confident that he will get back to where he was. I was just wondering if anyone else had experienced this or had any advice?