T he Animal Welfare Act (AWA; 7 U.S.C. 2131 et seq. ) is intended to ensure the humane treatment of animals that are intended for research, bred for commercial sale, exhibited to the public, or commercially transported. Under the AWA, businesses and others with animals covered by the law must be licensed or registered, and they must adhere to minimum standards of care. Farm animals are among those not covered by the act, which nonetheless provides a broad set of statutory protections for animals. The law was first passed in 1966 following several years of lobbying by animal welfare organizations and growing public outcry over allegations that large numbers of pets were being "dognapped" for sale to medical research laboratories. Congress amended the original law in 1970, 1976, 1985, 1990, and 2002. These amendments generally were intended to expand the scope of the AWA or to clarify various provisions. The U.S. Department of Agriculture's (USDA's) Animal and Plant Health Inspection Service (APHIS) administers the AWA. The House and Senate Agriculture Committees have exercised primary legislative jurisdiction over the act and its amendments. The AWA applies to any live or dead dog, cat, nonhuman primate, guinea pig, hamster, rabbit, or other warm-blooded animal determined by the Secretary of Agriculture to be for research or exhibition, or used as a pet. The AWA also excluded birds, rats, and mice bred for research; horses not used for research; and other farm animals used in the production of food and fiber. Retail pet facilities were not covered, unless they sold wild or exotic animals. Cold-blooded animals like fish and reptiles also were excluded from coverage. In 2002, an amendment to the AWA changed the definition of "animal" to include birds, rats, and mice. However, APHIS has yet to promulgate a rule to implement this change in the definition. As of late 2015, APHIS stated that it is moving forward with a final rule, but has not stated a timeline for its publication. Generally, animal dealers and exhibitors must obtain a license, for which an annual fee is charged. APHIS does not issue a license until it inspects the facility and finds it to be in full compliance with its regulations. If a facility loses its license, it cannot continue its regulated activity. Those who conduct research, and general carriers that transport regulated animals, do not need a license but must still register with APHIS and undergo periodic inspections. Specific details follow. Dealers , including pet and laboratory animal breeders and brokers, auction operators, and anyone who sells exotic or wild animals, or dead animals or their parts, must have an APHIS license for that activity. So-called Class A licensees are breeders who deal only in animals they breed and raise; all others are called Class B licensees. Exempt from the law and regulations are retail pet stores, those who sell pets directly to pet owners, hobby breeders, animal shelters, and boarding kennels. Exhibitors must be licensed by APHIS as such. These so-called Class C licensees include zoos, marine mammal shows, circuses, carnivals, and promotional and educational exhibits. The law and regulations exempt agricultural shows and fairs, horse shows, rodeos, pet shows, game preserves, hunting events, and private collectors who do not exhibit, among others. Animal transporters must be registered, including general carriers (e.g., airlines, railroads, and truckers). Businesses that contract to transport animals for compensation are considered dealers and must have licenses. Research facilities must be registered. They include state and local government-run research institutions, drug firms, universities, diagnostic laboratories, and facilities that study marine mammals. Federal facilities, elementary and secondary schools, and agricultural research institutions are among those exempt from registration. Animal fighting is prohibited by the AWA. The ban includes dogfights and bear and raccoon baiting; sponsors and exhibitors are subject to penalties. The AWA also has banned bird fights, except in the states where they are not prohibited by state law (namely Louisiana and New Mexico), and the sponsor or exhibitor was unaware that the transaction had occurred in interstate commerce. Under provisions of the 2014 farm bill, spectators at animal fighting venues are now in violation of the AWA. Retail pet stores were originally exempt from AWA licensure. Over the years, selling animals sight-un seen (often over the Internet) raised concerns about humane treatment of these unregulated retail sales. In September 2013, APHIS announced a regulatory change to redefine a retail pet store to mean a place where a buyer could personally observe the animal prior to purchase. Other retail outlets now require licensure and inspection under AWA. Retail pet stores that sell animals in face-to-face transactions remain exempt from AWA licensure. The regulation further exempts anyone selling animals (except wild or exotic animals) that derives no more than $500 gross income from the sale of such animals. The rule would also increase from three to four the number of breeding female dogs or cats, and/or small exotic or wild mammals, that a person may maintain on premises and remain exempt from AWA licensing and inspection. All licensed and registered entities must comply with USDA-APHIS regulations, including recordkeeping and published standards of care. These standards deal with humane handling, shelter, space requirements, feeding, watering, sanitation, ventilation, veterinary care, and transport. (AWA regulations are found at 9 C.F.R. §1.1 et seq. ) APHIS's Animal Care (AC) program oversees implementation of the AWA. For 2015, AC had an annual budget of approximately $28 million. AC officials make unannounced inspections of registered and licensed facilities to ensure compliance with all rules. Under the AWA, research facilities are to be inspected at least annually. Federal research institutions are exempt from AWA licensing and inspection. Inspection frequency for other AWA-regulated facilities is based on risk; for example, moderate-risk facilities are to be visited about once yearly. APHIS inspectors also conduct searches to identify unlicensed or unregistered facilities. Failure to correct deficiencies can result in confiscation of animals, fines, cease-and-desist orders, or license suspensions. In 2010, USDA's Office of the Inspector General (OIG) released an audit of AC's investigations of large-scale dog dealers (i.e., breeders and brokers) that failed to provide humane treatment for the animals under their care. In a previous audit of laboratory animals, the OIG found that AC did not aggressively pursue enforcement actions against violators of AWA. The May 2010 audit determined that (1) AC's enforcement process was ineffective against dealers with repeated violations; (2) APHIS misused its guidelines to lower penalties for AWA violators; and (3) some large breeders circumvented AWA by selling animals over the Internet. APHIS concurred with the OIG's findings and implemented 13 of the 14 recommendations, including a change in the definition of retail pet store to no longer exempt retail pet stores that were not selling animals in face-to-face transactions. Although long known as the Animal Welfare Act, the original law was passed simply as P.L. 89-544, and referred to as the "Laboratory Animal Welfare Act" of August 24, 1966. The law requires dealers in dogs and cats for research purposes to obtain a USDA license and to abide by USDA-set humane treatment requirements. It also requires a research facility to register with USDA only if it uses dogs or cats and either (1) purchases them in interstate commerce or (2) receives federal research money. The law authorizes the Secretary of Agriculture to set humane handling standards for guinea pigs, nonhuman primates, rabbits, and hamsters as well as dogs and cats—but only dealers and research facilities with dogs and cats are subject to these standards. Farmers and pet owners are among those exempted from the law. Other provisions spell out recordkeeping requirements, enforcement authorities and penalties for noncompliance. P.L. 91-579 renamed the "Laboratory Animal Welfare Act" the Animal Welfare Act and expanded animal coverage to include all warm-blooded animals determined by the Secretary to be used for experimentation or exhibition, except horses not used in research and farm animals used in food and fiber research. The 1970 law also incorporated exhibitors; defined research facilities; and exempted from coverage retail pet stores, agricultural fairs, rodeos, dog and cat shows. The 1976 amendments ( P.L. 94-279 ) added Section 26 to the AWA. Section 26 is directed at animal fighting and made illegal (1) sponsoring or exhibiting an animal in an animal fighting venture; (2) interstate shipment of animals to be used in animal fighting ventures; and (3) use of U.S. mails or communication systems to advertise or promote animal fighting ventures. Section 26 contained its own definitions, authority for investigations, and penalty provisions. The 1976 amendments also clarified and expanded previous regulations covering animal transport and commerce. Hunting animals are generally exempt. The amendments passed over the objections of USDA and the U.S. Attorney General, who believed that animal fighting was a state and local law enforcement issue. These amendments were passed as Title XVII, Subtitle F, of the Food Security Act of 1985 ( P.L. 99-198 , the omnibus 1985 farm bill). The law directs the Secretary to set new minimum standards of care for handling, housing, feeding, water, sanitation, ventilation, and so forth. One new provision that was highly contentious at the time singles out two species by requiring standards for the exercise of dogs and the psychological well-being of primates.