My 55 lbs pointer goes on the majority of my trips with me! I have two sleep systems:
For overnight lows above 40F I have a MYOG dog quilt with a 10d outer and apex inner. It’s effectively a synthetic version of the Groundbird Gear Turtle Top Quilt. It’s light, cheap, and easily repairable. I don’t think this is an effective setup as lower temps as it requires a lot of fiddling.
Below 40F, I have a Nunatak Dog Bivy. Love this thing, Nunatak consistently puts out best in class gear and this is no exception. I’m pretty sure Jan’s dog Skotti is also a McNab!
As for pads, I basically always use a CCF pad that doubles as my sit pad during the day. I've dabbled with cutting down inflatables but haven't had success yet. I think a wide, cut down, self-inflating pad may be the eventual end point.