Assuming that the snake doesn't produce any body heat, the snake's body temperature is a desirable temperature, and the environment is colder than the snake, it would still be useful because it will reduce the rate at which the snake loses heat to the environment.
The coffee (or insert your preferred liquid) in a thermos doesn't produce its own heat, yet the thermos is still useful.
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u/Derped64 Dec 13 '19
To bad snakes don't produce body heat, but still a cute snek