Thermoregulation in African camels appears to be related to water availability.
Infrared image of two camels
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"When African camels (Camelus dromedarius) do not get enough water, their body temperature's amplitude (the difference between its highest and lowest values) increases from 3.6°F (2°C) to as much as 10.8°F (6°C)." (Shuker 2001:91)
Book The Hidden Powers of Animals: Uncovering the Secrets of NatureMarshall Editions Ltd.November 21, 2017 Dr. Karl P. N. Shuker