9 CFR § 2.131 - Handling of animals.
(a) All licensees who maintain wild or exotic animals must demonstrate adequate experience and knowledge of the species they maintain.
(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.
(3) Young or immature animals shall not be exposed to rough or excessive public handling or exhibited for periods of time which would be detrimental to their health or well-being.
(4) Drugs, such as tranquilizers, shall not be used to facilitate, allow, or provide for public handling of the animals.
(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.
(3) During public exhibition, dangerous animals such as lions, tigers, wolves, bears, or elephants must be under the direct control and supervision of a knowledgeable and experienced animal handler.
(4) If public feeding of animals is allowed, the food must be provided by the animal facility and shall be appropriate to the type of animal and its nutritional needs and diet.
(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.