I adopted her when 10 years ago for my parents. So she is about 10 or 11. An old lady now. We all just love her to pieces. She has had her shots, She has been in my parents care tho and I think she is lacking some things. I take her to the groomers every once in a while. I noticed her black fur has faded to brown and she is arthritic. I spent a 100 bucks on glucosamine tablets for her from Petco but what causes the fading fur? I know she is lacking vitamins, but which ones? What can I feed her to fix it?
He Fur has faded to a copper brown.

My Lab often seems sore after a long exercise, he is older (5-7yrs), he is also very big (110lbs), so we decieded to buy Glucosamine and Chondroitin chewable tablets made just for dogs and we give him the daily recommended dosage. We also picked up a bag of Dogswell Happy Hips. My question is, can a dog get too much Glucosamine and Chondroitin? And will it effect his health negatively?
Add: He only gets 1 of those Happy Hips as a treat everyday.
Mups Pup: Our vet only recommended the G and C tablets. We recently picked the HH at the local groomers and haven’t asked yet. He is 102lbs, and is a great weight for his bone structure. He’s very tall and long, much bigger than your average Lab.
Sorry, meant 110lbs and Mups MOM!