"Sentience is the ability to feel, perceive, or experience subjectively. Eighteenth-century philosophers used the concept to distinguish the ability to think (reason) from the ability to feel (sentience). In modern Western philosophy, sentience is the ability to experience sensations (known in philosophy of mind as "qualia"). In Eastern philosophy, sentience is a metaphysical quality of all things that requires respect and care. The concept is central to the philosophy of animal rights, because sentience is necessary for the ability to suffer, and thus is held to confer certain rights." (cf. Wiki - Sentience) RELATED NEWS: "Quebec bill calls animals 'sentient beings' and includes jail time for cruelty"
Figure source and caption: "According to the Cambridge Declaration on Consciousness, "near human-like levels of consciousness" have been observed in the African gray parrot."