Fulfillment
An Upanishad reference:
A Bird is fulfilled by viewing her CompanionBird fulfilled from her Love.
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Consciousness studies ref. at large say:
Pure Consciousness is
when there is no Ego , & there is Desire to share Love.
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Sentience:
can be wholly Righteous constituent Spiritual being ( Certain recorded instances: birds, donkey, dog , hen, some humans etc.)