What physical signs indicate that a fasting juvenile snake's energy reserves are significantly depleted, shrinking the safe fasting window?

Answer

Visible thinness or wrinkles along the body sides

When a snake begins exhibiting visible thinness or develops wrinkles along its sides, it signals that reserves are being utilized for basic maintenance, and the safe fasting window is drastically reduced.

What physical signs indicate that a fasting juvenile snake's energy reserves are significantly depleted, shrinking the safe fasting window?
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