Therapy is defined as the treatment of diseases. This practical book serves as both a work of reference as well as a structuring aid when it comes to treating dogs on the underwater treadmill. The book is divided into three parts: • Basics such as the functions of the underwater treadmill, how the dog "works" on the underwater treadmill, training theory principles. • For the practice, e.g. medical findings, suggestions for the treatment of elbow dysplasia, hip dysplasia, etc. • From experience, e.g. Bobby, a golden retriever suffering from arthrosis, who serves as an example of treating a dog with a chronic disease. Further examples include Cindy and Murphy. 60 figures and 22 tables additionally illustrate the content of this book. The book's structure facilitates the finding of required information.