If cavies lived in an ideal world, the temperature would never drop below 18'C or above 22'C, with a relative humidity of
45-70% and a 12-16h light/day cycle. In the real world, clearly they can survive conditions that differ from the ideal. However temperatures over 30'C are not well tolerated, particularly by long haired breeds, older cavies and pregnant sows. Likewise all cavies are more vulnerable particularly older ones and newborns at temperatures below 17'C.
