We adopted a Retriever/Border Collie mix a few weeks ago. He's about 3 1/2 months old. He's VERY smart, and may be a little too smart for his own good (or ours!) We have been pretty successful with crate training and house training, at least until a few days ago. We followed the usual advice for potty training - took him out every couple of hours and praised him highly when he went, kept him in the same room with us to prevent accidents, didn't punish him when they did occur. All worked pretty well, so we then tied a string of jingle bells to the doorknob and trained him to ring them when he needed to go out. He picked up on that within a few days, and it all seemed great. But now he has figured out that we will let him outside whenever he rings the bells! So he'll ring them and then go outside and just sit down on the grass to watch the world go by, or bark "hello" to the kids across the street when he sees them. Yesterday he "asked" to go out three times, only one of which was productive. The other two times were to hang out. So I thought I would ignore it if I knew he had peed and pooped a short time before. And you might see this coming...I ignored it when he rang the bell once yesterday, then came into the living room and found he had peed on the carpet. I'm almost convinced that he thought, "OK, if you won't let me out, I'll pee inside until you do!" Any suggestions on how we can determine when the bell-ringing is sincere, and when he's crying wolf?