A service dog is a type of assistance dog specifically trained to help people who have disabilities including visual difficulties, hearing impairments, mental illness, seizures, diabetes, Autism, and more.
Desirable character traits in service animals typically include good temperament or psychological make-up (including biddability and trainability) and good health (including physical structure and stamina). Service dogs are often trained and bred by service dog organizations. Labrador Retrievers, German Shepherds, Golden Retrievers, and in recent years American Pit Bull Terriers are the most common breeds used as service dogs, but any breed or mix of breeds is capable of being a service dog, though few dogs have all of the health and temperament qualities needed. Such a dog may be called a "service dog" or an "assistance dog," depending largely on country. Occasionally they are incorrectly referred to as "Seeing Eye Dogs" however this refers to a specific organization and not to all Guide Dogs.