Those muttlucks look wonderful! There are lots of good websites that will show jackets and fleeces for your B. I wouldn't think feeding needs to change when it gets really cold unless he spends lots of time outdoors - some basenjis actually love the snow, so they say, although mine would not. Once the plows come through and you have running or walking room, his exercise doesn't have to suffer either. I lived in Vermont for a few years and our dogs (not basenjis then) managed just fine, both the longhaired ones and the sleek great dane. Basenjis have a lot less body weight, though, so a good warm fleece or fleece lined jacket would be in order. It gets real obvious when they're cold - they stop moving, shiver a lot, and try to get picked up! Of course mine does that at 55 degrees.