American Shetland Sheepdog and the Canadian Shetland Sheepdog Association Code of Ethics regarding breeding
http://www.assa.org/ethical.html
NON-COMMERCIAL ACTIVITY:
1) A responsible breeder prohibits the sale of animals or the provision
of stud services/brood matrons to commercial operations, including
puppy mills, pet shops, brokers, laboratories, auctions, raffles, or
contest giveaways.
2) Motivation for breeding the Shetland Sheepdog should be the creation
and improvement of the breed, rather than solely for financial gain.
http://www.canadianshelties.ca/codeofhonour.html
The CSSA considers it unethical for any of its members to sell or
supply any dogs or stud services/brood matrons to pet stores,
wholesalers or brokers, raffles, lotteries, auctions, flea markets,
laboratories or as give-away prizes.