poop in my house all the time, he was potty trained outside and then was put in obediance classes for a while, he just recently graduated puppy classes and has been doing great going outside and has a schedualed eating habit. I am just shocked he has started to go poop in my house. He goes outside 45 minutes after feeding hours and the minute we get home from work he is brought outside and given a chance to go potty for an hour as I take him on a brisk stroll around our house. but he does nothing at all and then the minute we get inside even after having 10 more mins outside before we go in he will walk around 10 minutes and then poop in my house!!! its getting on mine and my husbands nerves, my trainer doesnt know why he is doing it and either do we, we take really good care of him and do everything we learn from the vets and our trainer, is there a way to stop this habit? because I am scared my husband will get fed up and says he has to go!?!

Also he is a 1yr old shiba inu fully intact male. for further info.