My parents own business service dog training business.They do law enforcement service dogs and specialized service dogs for disabled.Almost all,the dogs they train come straight from breeders then trained for specific person.
That is considered support dog. Service Dogs go thru hundreds of hours of specialized training which costs thousands of dollars .Service dogs are trained to help people who are blind,deaf or other physical handicaps.There are also service dogs that are trained to search for drugs, work with law...