This cartoon is notable for being one of The 100 Greatest Looney Tunes.
- Blinding Bangs: A. Flea's hair almost always covers his eyes.
- The Cameo: Bugs Bunny and Porky Pig can be briefly seen on the cover of Elmer's comic book.
- Flea Episode
- Getting Crap Past the Radar: The gag where Elmer's dog drags his butt in pain across the floor, stopping for a moment to mug to the audience "Hey, I better cut this out, I may get to like it."
- Hates Baths: The main conflict is that Elmer's dog is trying to avoid scratching himself, all because Elmer will give him a bath if he realizes the dog has a flea on himself.
- I'm a Humanitarian: A. Flea puts both the dog and Elmer Fudd on his menu in the end.
- Larynx Dissonance: While almost all of A. Flea's dialogue is spoken by Sara Berner, the "T-BONE!" line is screamed by Mel Blanc in a much different sounding voice.
- Pun-Based Title: On the phrase "A stitch in time."
- Punny Name: A. Flea.
- Seen-It-All Suicide: When Elmer's cat sees both his owner and the dog getting carried off on a plate by A. Flea, he quips "Now I've seen everything!" and shoots himself in the head with a pistol.
- Show Within a Show: Elmer is seen reading a Looney Tunes comic book by his fireplace.
- Talking with Signs: As A. Flea makes his appearance, a sign appears on screen announcing "This is a flea, folks", followed by another reading "Teeny, ain't he?"
- Wartime Cartoon: There are some brief references to food rationing (A. Flea takes a point out of his ration card before biting the dog, and sings about "no more Meatless Tuesdays" at the end), and A. Flea hides inside an air raid shelter after setting off some explosives.