It is revealed that Les shares his apartment with a pet dog named Phil, who is so aggressive that Les has to wear heavy gloves and a padded arm guard while feeding him. Phil's bad temper is to explain some of the bandages that Les is seen wearing throughout the series.
The book Herb is reading in the final scene, is Uncoupling: The Art of Coming Apart, a divorce guide published in 1972, written by Marya Mannes and Norman Sheresky. He is dreaming about divorcing his wife.