以下是美国对繁殖者的分类：

Hobby breeder:
A breed fancier who usually has only one breed but may have two; follows a breeding plan in efforts to preserve and protect the breed; produces from none to five litters per year; breeds only when a litter will enhance the breed and the breeding program; raises the puppies with plenty of environmental and human contact; has a contract that protects breeder, dog, and buyer; runs a small, clean kennel; screens breeding stock to eliminate hereditary defects from the breed; works with a breed club or kennel club to promote and protect the breed; and cares that each and every puppy is placed in the best home possible.

爱好繁殖者：他们是某品种的爱好者，通常他们只繁殖一到两个品种，他们遵循繁殖计划是为了保护这个品种，他们每年只繁殖1～5胎，只有一种前提他们才会繁殖，那就是这胎有机会增强这个品种。
他们在良好的环境中喂养幼犬，保证幼犬与人类足够的接触。他们使用协议保护繁殖者，狗，和购买者，他们经营着小的，干净的犬舍，他们监控自己的种犬避免遗传缺陷，他们和某个品种俱乐部或者犬业协会协作，来保护和推进这个品种，并且用心的照顾每一个幼犬，为每个幼犬寻找最合适的家庭。

Commercial breeder:
One who usually has several breeds of dogs with profit as the primary motive for existence. The dogs may be healthy or not and the kennel may be clean or not. The dogs are probably not screened for genetic diseases, and the breeding stock is probably not selected for resemblance to the breed standard or for good temperament. Most commercial breeders sell their puppies to pet stores or to brokers who sell to pet stores.
商业繁殖者：他们通常有多个品种的犬，是以利益为主要驱动的存在。他们的狗可能健康或不健康，他们的犬舍可能清洁或脏乱，他们的狗可能会被监控以避免遗传病，他们的种犬可能不会按照品种标准和性格进行筛选淘汰。绝大部分的商业繁殖者把他们的幼犬销售到宠物商店或者那些和宠物商店交易的经销商。

Broker:
One who buys puppies from commercial kennels and sells to retail outlets. Brokers ship puppies by the crate-load on airlines or by truckload throughout the country. Brokers must be licensed by USDA and must abide by the shipping regulations in the Animal Welfare Act.
经销商：
他们从商业犬舍购买幼犬，做转手的零售生意。经销商用航空或者路运的方式将幼犬发到各地。这些经销商必须具有美国农业部的认可并且必须遵守运送规范，保证动物福利。

Buncher:
One who collects dogs

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