The first Koontz novel I ever read was Watchers. Golden retrievers are a focus in this story too. Once again Koontz has written a fascinating tale of people, both good and evil, that will keep you reading way past bed time. If you haven't read Watchers I highly recommend it too. You can read them in any order. They're both well worth the time. Highly recommended.
One caveat. Some authors are starting to get preachy on their favorite causes. Koontz is just a little distracting in this novel with his crusade for dogs. Not nearly as annoying as Grisham has been lately, but it does detract from the story.