Are animals conscious? How new research is changing minds

 https://www.bbc.com/news/articles/cv223z15mpmo

"The field is replete with weasel words and unfortunately one of those is consciousness," says Prof Stevan Harnad of Quebec University.

"It is a word that is confidently used by a lot of people, but they all mean something different, and so it is not clear at all what it means."

He says that a better, less weasley, word is "sentience", which is more tightly defined as the capacity to feel. "To feel everything, a pinch, to see the colour red, to feel tired and hungry, those are all things you feel," says Prof Harnad.