A therapy dog is a dog that might be trained to provide affection and comfort to people in hospitals, retirement homes, nursing homes, schools, hospices, disaster areas, and to people with autism.
Therapy dogs are usually not assistance or service dogs, but can be one or both with some organizations.
In the U.S., therapy dogs are not service animals and are not afforded the same privileges as them.
The systematic use of therapy dogs is attributed to Elaine Smith, who worked as a registered nurse. Smith noticed how well patients responded to visits by a chaplain and his Golden Retriever. In 1976, Smith started a program for training dogs to visit institutions, and the demand for therapy dogs continued to grow. In recent years, therapy dogs have been enlisted to help children overcome speech and emotional disorders.
Therapy dogs are usually not assistance or service dogs, but can be one or both with some organizations. Therapy dogs are not trained to assist specific individuals and do not qualify as service dogs under the Americans with Disabilities Act. Institutions may invite, limit, or prohibit access by therapy dogs. If allowed, many institutions have rigorous requirements for therapy dogs. United States-based Therapy Dogs International (TDI) bans the use of service dogs in their therapy dog program. Service dogs perform tasks for persons with disabilities and have a legal right to accompany their owners in most areas. In the United States, service dogs are legally protected at the federal level by the Americans with Disabilities Act of 1990.
Many organizations provide evaluation and registration for therapy dogs. In the United States, some organizations require that a dog pass the equivalent of the American Kennel Club's Canine Good Citizen test and then add further requirements specific to the environments in which the dogs will be working. Other organizations have their own testing requirements. Typical tests might ensure that a dog can handle sudden loud or strange noises; can walk on assorted unfamiliar surfaces comfortably; are not frightened by people with canes, wheelchairs, or unusual styles of walking or moving; get along well with children and with the elderly; and so on.