To me, as long as you're drinking a bottle of water with it I see no harm. You get hydrated from coffee. Of course you need to drink water in general, but the concept of drinking cups of water to balance out dehydration from coffee is just a myth.
Reptiles do not maintain their own body temperature within a narrow range like mammals and birds, so controlling their environmental temperature is critical for normal activity and good health. Reptiles are poikilothermic-which means that their body temperature alters with the surrounding environmental temperature.
With a few exceptions all reptiles such as the lizard are cold blooded creatures. The temperature of an animalâs blood (whether an animal is warm blooded or cold blooded) is related to its body temperature. Cold blooded creatures such as the lizard take on the temperature of their surroundings. In other words, they are hot when their environment is hot and cold when their environment is cold. In hot environments, cold blooded animals can have blood that is much warmer than warm blooded animals.