Scrolling through this thread reminds me of the log dog house we built for my son's Lab. We split landscape timbers, screwed them together and lined it with ply wood as "insulation." Shingle roof with chimney and cap. Summer, he would raise the cap on a couple of strips of wood for ventilation. It also had a covered front porch so Hogan could have a place to recline if it was hot. The door was offset so he could curl up in the front corner, out of the wind. Winter had a piece of heavy material over the doorway. We built it over the Memorial Day weekend- three days! When he moved out, it was fun getting it on a utility trailer!
BTW, he went to Lowe's to buy a huge quantity of sheetrock screws. Doing the math, it was cheaper to buy five one-pound boxes than buying a five pound box. How many of us do that? I like the grocery store labels that give the cost per unit- ounces, pounds, etc.
Life is like water-skiing; if you slow down, you go down.