Eternal undying Immortality
The "spirit soul" [ conscience, thoughts, emotions) components in all Sentience ( animals, birds fowl, fish., humans, squirrel) is Eternal , being non-materialistic, Energy and separate from body physicality .
A strong Intent of Trueness Conscience can transform the physicality.
Immortality is via Affableness with Character Nature of True Conscience wherein Essence electrons chemical electromagnetic ions photonic of Truth Spirit gets transferred, dissolves the corporeal and Establishes itself.
[ Transformation, Dissolving, New is perceived even in natural course of things in all of nature existence]