9 CFR § 2.131 - Handling of animals.
(1) Handling of all animals shall be done as expeditiously and carefully as possible in a manner that does not cause trauma, overheating, excessive cooling, behavioral stress, physical harm, or unnecessary discomfort.
(i) Physical abuse shall not be used to train, work, or otherwise handle animals.
(ii) Deprivation of food or water shall not be used to train, work, or otherwise handle animals; Provided, however, That the short-term withholding of food or water from animals by exhibitors is allowed by these regulations as long as each of the animals affected receives its full dietary and nutrition requirements each day.
(1) During public exhibition, any animal must be handled so there is minimal risk of harm to the animal and to the public, with sufficient distance and/or barriers between the animal and the general viewing public so as to assure the safety of animals and the public.
(2) Performing animals shall be allowed a rest period between performances at least equal to the time for one performance.
(1) Animals shall be exhibited only for periods of time and under conditions consistent with their good health and well-being.
(2) A responsible, knowledgeable, and readily identifiable employee or attendant must be present at all times during periods of public contact.
(e) When climatic conditions present a threat to an animal's health or well-being, appropriate measures must be taken to alleviate the impact of those conditions. An animal may never be subjected to any combination of temperature, humidity, and time that is detrimental to the animal's health or well-being, taking into consideration such factors as the animal's age, species, breed, overall health status, and acclimation.
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