Since adopting a rescued dog with separation anxiety, I have come to know a lot of the canine soothing strategies and music. This book is filled with fascinating information about how both dogs and humans respond to the sound in our environment. The CD Through a Dog's Ear is my favorite of the 10 or more canine soothing CDs I now own. Not only do the dogs seem to enjoy it, every person who has heard it has commented on how relaxing the music is. I rotate through my other canine soothing CDs, but this CD stays in the CD player all the time.