This was the first Looney Tune since "Porky's Garden" to use the self-writing "That's all Folks!" ending, now using the "bullseye" graphic for it (similar to Merrie Melodies) instead of the black background that the 1936 and 1937 cartoons used.
This was the only time Bob Clampett directed a cartoon featuring Sylvester.
The grey cat drinking a bottle of [Arsenic and Old Grapes] and the 4 cats dressed in Theodore Roosevelt's props, wielding sabers, and yelling, "CHARGE!" as they run up the stairs were parodied and referenced from the play, 'Arsenic and Old Lace,' by Joseph Kesselring.
"Milkman, keep those bottles quiet!" refers to the World War II song by Ella Mae Morse, which admonished milkmen to deliver milk quietly. This was due to thousands of people working nights and sleeping days to support wartime industries, especially defense.
The popular film Lassie Come Home (1943) is spoofed here, but Lassie was never as vicious as portrayed here.