"My golden retriever / beagle mix has had health problems, the signs / symptoms were hair turning white and falling out. (He is only 4 years old) After extensive testing by my vet, they could not find out what was wrong. I started doing research on my own, and decided to switch him from Science Diet brand food to BLUE, guess what? His coat returned to normal, and no more brittle toenails. BLUE is not available in my area, so I drive 80 miles roundtrip to purchase this product."