Hi September-
I’m not sure you necessarily have to feed a senior food to your dog because there are no official AAFCO requirements for that life stage. It is up to each company to decide what they want to market as a “senior” dog food. Just visit the websites to check out what the companies are all about when deciding. That being said, I have fed two formulas that were marketed as senior/healthy weight that I thought were good for my dogs. They are Nutrisource and Victor. I agree with anonymously that it is good to add a little something to their base kibble meals. Best of luck with your pup.
