Steve May & David Pisarra 
What about Wally? Co-Parenting a Pet with Your Ex. [EPUB ebook] 

This handbook on how to share a dog is written by Pet Expert Steven May and Family Law attorney David T. Pisarra. Using their years of experience with couples who break up, they demonstrate how to share the love a dog, and develop a Parenting Plan that allows a couple to overcome the friction points.
Drawing on their respective breakups, each author contributes their perspective, and using themselves as real life examples, they explain how couples who used to be in love, can continue to be Pet Parents to their dog.