A. The temperature in indoor housing facilities shall be regulated by heating or cooling to protect the animals from extremes of temperature, to provide for their health, and to prevent their discomfort. The ambient temperature may not fall below or rise above the temperatures which the animal can tolerate without stress or discomfort.
B. Indoor facilities shall at all times be adequately ventilated by natural or mechanical means to provide for the health and to prevent discomfort of the animals. The facilities shall be provided with fresh air by means of windows, doors, vents, fans, or air-conditioning, and shall be ventilated to minimize drafts, odors, and moisture condensation.
C. Indoor facilities shall have ample lighting, by natural or artificial means, or both, of good quality, distribution, and duration as appropriate to the species being rehabilitated. The lighting shall be uniformly distributed and of sufficient intensity to permit routine inspection and cleaning. Lighting of primary enclosures shall be designed to protect the animals from excessive illumination.