Stud Dog Central is a directory of free ads for purebred dogs at stud worldwide. Studs must be purebred but may be registered or unregistered. List a stud or find a stud to use. Find links to many dog related services including the use of dogs for various needs, breed related services, genetic testing, emergency planning for pets, unique patented equipment, supplies, rescue aid, etc. See info and links about genetic diseases in dogs. Read informational dog related articles.