Old Kentucky lore about the family 'pet'

If want to know what your dog dreams about, then let him/her fall asleep on your hat or kerchief ('hankerchief (Tennessee/Kentucky pronunciation').  Then wear your kerchief or hat the next night when you sleep.  An odd old belief (19th/Early 20th century), when animals were mostly viewed as 'workers' and not pets.  Hearkening back, but not related historically to the myths of the 'Golden Age', when mankind, animals, and spirits walked as ONE or understood one another, supposedly...