Hi Tracy-
Welcome to DFA! It sounds to me like you are doing a great job with your pups. I have litter mates also. Two lab mix males. They will turn three next month. What a handful! I’ll never do that again! However, I can’t imagine life without them.
Anyway, you got a clean bill of health at the vets so you must be doing something right. Most members on this site believe that it is best to feed your dogs variety. A rotating diet is recommended. It sounds like Royal Canin is very expensive for a 2.5 star food. You could definitely keep it in your rotation since the dogs do well on it if you want. You could probably add another kibble to your rotation that has more protein and even be less expensive. So far I use Victor and Natures Logic Kibbles. I also use several different toppers for variety. Such as canned, eggs, sardines, raw nuggets and even dehydrated.
When you are introducing a new food, just transition slowly and add a little plain pumpkin and probiotics to help with the change. Good luck to you and your pups!
