Book excerpt: This well-written and informative book has become the standard on the uses and laws regarding therapy and service dogs. With the expansion of new service dog types, a greater complexity with regard to service animal laws and regulations and the interpretation of these by the courts has developed. This book carefully examines these complexities at both the state and federal levels. In addition, the expanded use of therapy dogs in facilities and institutions has brought with it a paradigm shift in society's acceptance and acknowledgment of the canine capacity to contribute in meaningful ways to.the lives of ill and institutionalized persons.--From publisher.