"All of us sharing lives with dogs have noticed that their senses are superior to ours in many ways. How conscious are you of your dog's senses? Do you really know how well your dog can see, smell or hear? Have you thought of the fact that your dog has a priority of how to deploy his senses in various circumstances? Just like us, dogs can see, smell, hear, taste and feel, but they also have a sense of balance. Additionally, just like you and me, they have a sense of the condition of and movements in muscles and joints - a kinesthetic sense, and a visceral sense which reports the status to their brains. When the dog appears to be having a bad day, it may be one of those two senses reporting that something is not quite right. Be particularly attentive to the subtle signs dogs may show when they are having one of those bad days: Unfortunately, we miss most of these subtle signs. What we know about how dogs sense their worlds is changing, and new research is being published each year. In the 1970s I was taught that dogs can see only in black and white, and now we know they see in color, although not exactly the same rainbow as you and I. Recent research documents that dogs can smell, or sense, heat (Morell, 2020). Using their noses, dogs can detect things warmer than the surrounding environment and it seems that 31C (92F) is a limit. Many of you may have learned about birds finding their way using magnetism. Scientist have found that dogs too can sense electromagnetism and can probably find their way using this sense. Strangely enough, dogs will prefer relieving themselves facing north or south. They can simply see which direction is north. They can see the electromagnetism, due to a molecule in their eye called the cryptochrome molecule (Gruber, 2014). Additionally, many people claim to be able to do telepathic communication with dogs. We are truly living in an enriched world. In this book, I will describe some games and exercises where we first and foremost allow dogs to work their way using their outstanding olfactory sense. But we should never fail to be aware that the other senses are present and may be activated if the dog feels it useful"--