The snake occupies a position of singular density in the depth-psychology corpus, functioning simultaneously as emblem of the unconscious, mediator between worlds, healing daimon, chthonic fertility power, and vehicle of the dead. Jung establishes the foundational psychological reading: the snake is the ‘magical animal,’ archetype of racial instinct, symbol of the hidden unconscious tendency that guards or reveals buried treasure — its dragon form its mythological apotheosis. Von Franz extends this catalog into seven discrete mythological valences, from mantic inspiration to negative-mother principle to spirit symbolized as pneuma. Hillman presses back against the reductive interpretive reflex, arguing that collapsing the snake into ‘the unconscious psyche’ evacuates its imaginal presence; for him the snake retains an irreducible numinosity, its terror possibly the appropriate mortal response to an immortal. Padel, drawing on Greek sources, documents the snake as the supreme chthonic intermediary — pharmakon personified, at once poison and healer, prophetic lick and killing bite. Harrison recovers the genius loci and fertility-daimon dimensions, while Zimmer reveals the Indian nāga tradition’s cosmic range, from Shesha as Vishnu’s serpent substrate to the entwined Mesopotamian pair. Taken together, these voices map a term that refuses single valence, demanding that any serious depth-psychological reading hold its contradictions — healing and death, instinct and spirit, fear and fascination — in sustained tension.