We have a 17 week old chocolate lab boy. Ever since we brought him home at 10 weeks he has pretty much went outside. We even taught him to ring a bell to let us know when he has to go. He was doing great only about 3 to 4 accident a day. Two days ago he started just going in the house all time even when we have just had him outside he will come in and go right away. We are baffled he was doing so well.