Hi, I can tell you a little bit from my experience. I work at home so Duffy, a 8 months old female, is pretty much used to have me around all day long. However I already needed to leave her alone for several hours in a row. During the day there is no problem. She stays in the yard and just confortable. Lots of food and water. At night I needed to leave her only 4 times, so far, a maximum of 9, 9.5 hours. I left her inside, upstairs, where she prefers to be, joined all her toys and... oh well, and I closed the door and went away.
I must say now that I spent the whole night affraid of something happening with her or finding my house a huge mess. I even forgot to remove some books that I have in a shelf and which are very low and thought that when arriving I would not have any. But nothing happened. The house ok all the times, she did not do anything inside (but this as a matter of fact I would be surprised if she had pooped or anything inside), only the toys all over the floor!
And, of course, on arrival, that lovely kidney bean welcome that only boxers do!
