The fat content really depends on your dog. I use the leanest meat I can find (93/7 or 90/10) because my Dane can put on weight really fast. My sister has a boxer/cur mix that has a high metabolism and is really active. She feeds 80/20 because her dog burns the calories. You could try using meat with higher fat content. That would increase the calories of his meal without adding volume. I wouldn’t go straight to 80/20 though. I would increase the fat gradually to see how he does with it.
Do you think his dry coat could be due to the weather? Some dogs get drier skin/coats in the winter when the air is drier and we use indoor heating. It’s also possible it could be due to not enough fat in his diet. The coconut oil should help that.
