Consciousness and sleepwalking

Contemporary discussions of consciousness are dreadful.  People are so confused.  Let’s break it down.

How can you tell when someone is sleepwalking?  It’s subtle.  You need to compare their eye movements and breathing to what they exhibit when you know that they are conscious.

How can you tell when you are sleepwalking?  That’s easy.  You can’t.  You have no awareness of those intervals in your life.

How can you tell when your dog is sleepwalking?  That’s easy.  You can’t.  There is no behavior they exhibit that distinguishes sleepwalking behavior from normal behavior.

How can you tell when a mosquito is sleepwalking?  Again, you can’t.  It seems so obvious that beetles, worms, and all small creatures are not conscious.  They progress through their entire existence without the sort of conscious awareness that is confusingly natural to homo sapiens.

So, when we rank species on some arbitrary scale of simple to complex, at what rank do we draw a line and say that species above the line are conscious and those below the line are never conscious?

Perhaps all creatures, save homo sapiens, are sleepwalking?  What subtle clues do other species exhibit that distinguish their conscious moments from their sleepwalking moments?  Some assert that self-recognition is proof of consciousness.  Is self-recognition proof of non-sleepwalking, or can sleepwalkers recognize themselves?

I await proof that any species other than homo sapiens is conscious.