Complementary therapies are now widely employed in veterinary practice to deal with a range of diseases. Almost as widely they are regarded with suspicion, partly as a result of a lack of understanding and partly because there is sometimes little or no experimental scientific evidence to support these therapies. This chapter covers assessment of the potential for complementary therapy, diet, acupuncture, transcutaneous spinal electroanalgesia, touch therapy, homeopathy, herbal remedies, aromatherapy, Bach’s flower remedies, Reiki and Shen.