Lisa Olmsted Falls, OH 12/30/2008 9:06:19 AM My dog is a Cairn Terrier, he just turned a year old in October. He spends most of his days outside unless weather prohibits. He has about two walks a day. I'm pretty sure he understands the difference between outside and in. He will not poop in the house unless it's an extreme circumstance, but I can't get him to quit peeing in the house. On Everything, furniture, the corners of tables mostly. And, he'll do it right in front of me too.. Today he even peed on his food bowl outside, after it was empty! I don't get it! Is it because he's not neutered?