A therapy dog is a dog trained to provide affection and comfort to people in hospitals,retirement homes, nursing homes, schools, people with learning difficulties, and stressful situations, such as disaster areas. A therapy dog’s primary job is to allow unfamiliar people to make physical contact with it and to enjoy that contact. Children in particular enjoy hugging animals; adults usually enjoy simply petting the dog. The dog might need to be lifted onto, or climb onto, an individual’s lap or bed and sit or lie comfortably there. Many dogs contribute to the visiting experience by performing small tricks for their audience or by playing carefully structured games.