Books on Animal Complementary Health

Which book or books would you recommend for herbal healing for animals?

The best way to answer this question is to offer names of books that deal generally with complementary animal health as books looking specifically at healing with herbs are few and far between. I would recommend: Richard Pitcairn's, "Natural Health for Dogs and Cats", "The Complete Herbal Handbook for the Dog and Cat" and "The Complete Herbal Handbook for Farm and Stable" by Juliette de Bairacli Levy and "Four Paws, Five Directions" by Cheryl Schwartz.