My dogs are still puppies, only around 7 months old, but I have been giving them NuVet since I took them home. The breeder recommended them to me to keep the puppies healthy. I also noticed they have very shiny coats, which I like. The dogs love the treats but they are hard to break apart, so just keep in mind that they might be too big for smaller dogs. I have never had a problem with NuVet which makes the whole experience even better!