I have a 3 year old black lab/beagle mix named Bodacious (Bo) that I have had for a little over 2 years now. Within the past month, he has started pooping on the floor when he is home alone by himself. He started doing it in the unfinished basement, so I started closing the basement door thinking it would stop him but now he has been going on the main floor in our sitting room. My reasoning for his choice of the basement is that the cat will poop down there if she gets locked down there, and afterwards Bo will lead me down there and show it to me, so I thought maybe he started thinking it was OK to poop down there or something. That is obviously not the reason because neither of the other two dogs or the cat poop anywhere else in the house.
There have been no diet changes either in food or schedule of feedings, no new animals in the house, nothing out of the ordinary and this has seemed to come out of nowhere. In most cases, he has pooped by noon and my sister is the lucky one that finds it and gets to clean it up on the days she comes home for lunch.
After the first couple days of him doing it, we started putting him in the crate when we would leave. He didn't poop in the crate at all. After about a week, we let him stay out again and he was good for about week, then went back to the pooping. It is almost always right in the middle of the floor so he's not trying to hide it, and I can always tell when he has pooped because he will have his ears down and kind of slink over to me when I get home. We get up for work at 6:30, let them out to potty, feed them, and then let them out again an hour later before we leave for work.
I am really at a loss as to why he would start pooping in the house out of nowhere when he hasn't done it since we got him. I need some suggestions because I really like leaving him out as home security when we are gone. Please help!