I definitely agree that it is possible to make an outdoor dog used to being an indoor dog. BUT and this may or may not be the case for you and your dog, certain members of certain breeds sometimes really DO prefer being outside most of the time as opposed to being inside. For example, dogs that were once livestock guarding dogs may have a very difficult time adjusting to being inside full time because they may feel as though their job has been taken away from them if kept inside. Great Pyrenees, Nordic breeds, Anatolians, Komondors, and other working breeds may or may not prefer to be inside. My personal opinion is, it depends on each individual dog. If after a few weeks, your dog decides he quite likes being inside with you and likes being a couch potato (as most dogs do
) then I say he's happy and you're happy, so good job! Yay for a living throw rug on the floor, right?
BUT if after a few weeks he still seems to really REALLY desire being outside most of the time or even some of the time but inside at night or whatever, I think you should let the dog choose for himself. Pyrs were bred to be guardians. That's hard-wired into them. And some of them definitely feel they are doing their job better outside and want no part of being indoor dogs. Others love being in the presence of their owners 24/7.
So long as the dog is happy, is what's important, right?
My girls are outside most of the time, I will be honest. But we let them in probably every day for some of the time. But we ask them if they want to come in. We don't make them. If they decide they'd rather just stay outside, snoozing in the sun or playing in the snow, it's fine by me. But if they want to come in, that's okay too.