my lab Fang was perfectly housebroken. He was one of those puppies that had to poop 10 minutes after eating, so it was extremely easy to train him. Now, however, he has wandered from that pattern. He doesn't always poop now after eating, and has pooped in the house 4 times now. Sometimes right after I bring him in, sometimes at random. I take him out often because I think he has a small bladder- i swear he pees every hour. Why would he wander from his pooping pattern? I leave him out long enough, till he gets done sniffing around and comes back to sit next to me. I thought maybe stress, but nothing has changed. He doesn't have the squirts or anything. I'm baffled. any ideas?