Earl Mindell, R.Ph., Ph.D. is an internationally recognized expert on natural health and nutrition and the author of more than 30 books, including the international bestseller The Vitamin Bible, as well as The Herb Bible, The Supplement Bible, and The Allergy Bible. He is a popular lecturer and well-known authority on nutrients and natural health.

Virginia Hopkins, M.A. has written and co-authored more than 30 books on alternative health and nutrition, including the bestselling What Your Doctor May Not Tell You About Premenopause and What Your Doctor May Not Tell You About Menopause (with John Lee, M.D.). She is the editor of the Virginia Hopkins Health Watch, a widely read e-mail newsletter.

In this updated second edition, the renowned author of The Vitamin Bible and his coauthor, Elizabeth Renaghan, focus on how a dog's body functions nutritionally. The authors discuss easy, flexible, and affordable ways to keep one's dog healthy, and elaborate on the different nutritional requirements of different breeds. They explain why each nutrient discussed is needed, and recommend size-appropriate amounts of them for dogs ranging from small to giant.