The only Looney Tunes cartoon directed by Ted Bonnicksen, an animator in the Robert McKimson unit since the '50s.
Last appearance of Hector.
The pole Daffy uses to try to pole vault over the wall is made of bamboo. Early vault poles were actually made of bamboo before modern composites were developed.
A boon companion traditionally is a person one enjoys spending time and doing things with.
The sleeping powder Daffy uses says Hillsbury Pharmacy. This might be a play on Pillsbury, a popular brand of flour at the time.