The Tagin community of Arunachal Pradesh practices a profound shamanic religion, rooted in animistic and polytheistic beliefs. This spiritual framework, interwoven with their daily lives, is complemented by ethical principles that emphasize harmony, community solidarity, and respect for nature. Central to their religion is a pantheon of deities led by Doriang, the supreme god, and rituals conducted by the Nyibu (shaman), who bridges the human and spirit worlds.

Tagin ethics prioritize sustainable living, kinship, and accountability, guided by elders' wisdom and communal participation. Key practices include daily offerings, conflict resolution, and rites of passage celebrating life stages. The annual Si-Donyi festival unites the community in prayer and celebration.

By integrating religion and ethics, the Tagins achieve balance between humans, nature, and the divine, preserving their cultural and spiritual heritage for future generations.