dog dreaming
A sleep state, moving your arms and legs and making sounds, a manifestation of your dreams.
He could see that she was dreaming about running, her legs were going, and she was making little shouting sounds, dog dreaming, the way their poodle visibly dreamed of chasing deer.
dream dog
The floating negative colored spots you observe when your eyes are abruptly deprived from light or when you where blinded by a strong light source e.g. the sun or a flash light.
After accidentally looking at the sun, I couldn't get the dream dogs out of my eyes for half an hour.