The snake is not an endothermic animal and is actually ectothermic, so the correct option is A.
What is endothermic animal?
Endotherms are warm-blooded animals that maintain a constant body temperature regardless of changes in their surroundings.
Birds and mammals are the most common animals under endotherms.
Among the given animals, a snake is not an endothermic animal.
Thus, the correct option is A.
For more details regarding endothermic animals, visit:
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