The Nature of Animal Healing" - Martin Goldstein, DVM  ( He covers feeding beautifully)
 

"The Ultimate Diet - Natural Nutrition for Dogs and Cats" - Kymythy Schultze

 

"Raw Dog Food" - Carina Beth MacDonald

"Food Pets Die For" - Ann N. Martin

"What Vets Don’t Tell You About Vaccines" - Catherine O’Driscoll

"Homeopathic Care for Cats and Dogs" - Don Hamilton, DVM

"Complete Guide to Natural Health for Dogs and Cats" - RH Pitcairn, DVM, PhD

"Switching to Raw" - Sue Johnson

Out of Print, but if you can find it, get it

"The Complete Herbal Handbook for the Dog and Cat" - Juliette Levy

"DOGS - Homeopathic Remedies" - George MacLeod, DVSM

"Grow Your Pups with Bones"  - Dr Ian Billinghurst MRCVS

"Give Your Dog a Bone" - Dr Ian Billinghurst MRCVS

"Four Paws Five Directions" - Cheryl Schwartz

"If a Dog's Prayers Were Answered, Bones Would Rain From the Sky" - Suzanne Clothier

"Veterinarians Guide to Natural Remedies for Dogs : Safe and Effective Alternative Treatments and Healing Techniques from the Nations Top Holistic Veterinarians" - Martin Zucker

"Herbs for Pets" - Mary Wulff-Tilford