Juliette de Bairacli Levy is first and foremost one of the world's most famous herbalists. She lived and learned from the Gypsies of Europe how to grow and use medicinal plants for people and for animals. There is a wonderful video of her life by Tish Streeten called "Juliette of the Herbs". Cats Naturally is based on raising cats according to the cat rather than the human. Diet is determined in large part by their diet in the wild, medicines according to their own means of healing when left alone. There are herbal remedies for parasites and insects (mange, ear mites, ticks, lice, fleas & ringworm), and herbal remedies for digestive problems and other ailments. It is a great book and one I have used happily with my very beautiful and very healthy cats. This is a very sensible book by a very sensible, wise and loving woman.