I have used these supplements on my Labrador Retreivers since they were pups, on recommendation of the breeder. The dogs are now a healthy 3 years old, with beautiful coats and excellent physiques. I get compliments all the time about their good health and appearance even from the vet, and I have to say the combination of healthy food and the NuVet supplements get all the credit. The dogs think they are their morning treat! An excellent product. Glad the breeder is also a believer.