I don't personally think the French bulldog pictured is conscious. The pulse ox is still on the tongue and it looks like the tube is still tied in. During some planes of anesthesia the eyes are central and fixed as in the picture. I suspect that they're open in the picture because of the nature of the dog's large eyes.

I'm not saying it doesn't happen, but as I said in a response to another poster, I've always seen brachiocephalic breeds object the the endotracheal tube as any dog normally would when recovering.

I've got my issues with breeding extremely brachiocephalic dogs personally but I also have my doubts about the validity of what's being said regarding "enjoying the et tube."