This is a great read for anyone who cares for dogs as pets. We take for granted not only the power of dogs' sense of smell but also the necessity of smelling for them. And this is a reflection of our own loss of the sense of smell. Horowitz combines science, personal experience and observations, and field work to explore why dogs smell so much (and why humans smell so little.) At many times, I felt inspired to smell items around my home and observe my dog's sniffing behaviors.

While I gained a lot of information and enjoyed the many smelling adventures Horowitz guided me through, this book can read a bit clinical and academic at times, making it a slower read. But sticking through it, I found myself questioning myself, my dog, and my relationship to my dog's need to sniff.