What a fascinating book. It delves into dogs and their noses and into the sense of smell for people and other animals. I believe that you will never look at a dog sniffing something the same after reading this book. There are facts in here about noses. They have so many more receptors than we do so they can smell so much more than we do but it also goes into the science of how we smell. The author actually starts working on testing her nose against her dogs and even improves her sense of smell. Just like anything, use it or lose it. I highly recommend this book for anyone that loves dogs and/or science.