Two creatures from a page in the book titled Dr. Seuss's Sleep Book is seen at only at the beginning of the book beside the title of the story. They both appear to be creatures that sleep upside down hanged by their tails on trees. They are nowhere else seen in the book but one time.
In the video they are seen a few times due to the one on the left (who is revealed to be a woman) being voiced by Madeline Kahn. She wakes up and narrates the story of the book. She and sometimes her mate (who appears to be sleeping) if correct are seen in the video book a few times while she explains the story to the viewers.
She tells the viewers the news of people sleeping she has reported after being told and or have gone around and seen, and she herself has also been around weighing an Offt and telling the who's asleep score to the viewers as the Audio-Telly-o-Tally-o Count shows us the score she is explaining.