ENVIRONMENT (cont)
Automatically controlled lighting will provide guinea pigs regularly timed light and dark cycles. The illumination level should be 325 lux. Commonly, a second battery of lights is used while you are working in the animal room. An interval timer may be used to assure that the work light is turned off after you leave the room.
Noisy animals such as dogs should be housed away from guinea pigs. Noisy operations such as cage washing should be done in areas that are separated from animal housing areas. Controlling noise will reduce stress in animals.