So I just finished reading the book for Shelter Volunteers, which really is awesome for owners and volunteers. It provides a wealth of knowledge in an easy-to-understand format, that I could start using as soon as I put the book down (or turned kindle off). Then I bought this one (Downward Dog) last night because I have one dog that is a big jumper!! And I just really appreciated the detail behind why, then how to change it. Also the reminder that the success depends on me!! Now the question is, can my husband and I do it on our own, or would we be more successful, thus the dogs be more successful, if we brought Mike in. I think the latter is true if I am being honest!! But please buy the book, and then make your decision