Rather than having incidental music composed and arranged specifically for the cartoon, this is one of six Warner Brothers cartoons featuring a non-thematic soundtrack due to a musicians' strike. It was scored by John Seely of Capitol Records using stock music from the Hi-Q sound library.
The Barnyard Dog looks up information on dreams in a book titled 'The Significance of Dreams' by Sigmund Fraud - a play on the famous psychologist Sigmund Freud.
The psychiatrist's name is Cy Kosis (a play on the term 'psychosis' - a general class of mental disorders, characterized by hallucinations), and his office hours are 10 - 2 P.M.
The characters Mac and Tosh (a play on the word macintosh, a British term for a raincoat) might be a sly wink at the rodent cousin pair Chip n' Dale from rival studio Disney. That duo's name is a pun on Thomas Chippendale, a famous furniture maker from the 18th century known for his fine craftsmanship.