I've only made it about half way through the book so far but it is really great. Definitely worth the money. Super great tips and analogies! My own dog doesn't actually react to other dogs but I bought it because I'm a vet and wanted to help my clients. I also bought a body harness off store for the dogs online. I already owned nearly the exact same one but different brand but they are fantastic and my current one is nearly 11 years old but still works! They will last forever! I just thought I'd get him a fresh one. Shaping your dogs behavior isn't easy but it is simple and if you're willing to put in the work this book is key.