I'm feeding my 5 1/2 month old Merrick puppy plate dry with Wellness dry and i have a 15 year old Boston Terrier and we're feeding her Senior Medley. Well, my 5 1/2 month old wants the Senior Medley and I was reading the label and the only difference between the puppy and senior is that the senior has that it has glucosamine hydrochloride and chondroitin sulfate. I was wondering if it would hurt her if she ate that. I know that's for the senior's muscles and joints. I thought about getting the Grammy's pot pie to mix with the wellness since she didn't like the puppy plate much, but it also has the glucosamine and stuff in it to.
