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For anyone that wants to actually learn about consciousness, I recommend the book "In the Theater of Consciousness: The Workspace of the Mind"[1]. It teases apart different aspects of what people call "consciousness", gives a theory that explains them, and describes the supporting evidence found so far. The theory suggests that some but not all animals are conscious.

I believe the theory -- "Global Workspace Theory"[2] -- is currently the leading theory of consciousness, though the field is still very new.

[1] https://www.amazon.com/Theater-Consciousness-Workspace-Mind/... [2] https://en.wikipedia.org/wiki/Global_Workspace_Theory