Cruella managed to hold her memo-master and press the record button with the hand she had inside of the cast, despite the fact that such wouldn't be possible.
How did Cadpig bring the ball of twine through the vent with her and the other pups?
In "Leisure Lawsuit", while Lucky is standing on Cadpig's head, she moves her head as she's speaking, but Lucky's legs remain stationary.
Lucky's ears appear white during one of the scenes in "Purred It Through the Grapevine".
During the main pups' first totem pole formation, they fell down when their formation broke, though none of them seemed to be affected by the fall.
Lucky is twice as big as Cadpig, though in this episode, Cadpig could easily support Lucky and in some cases, Rolly, without consequence. This occurs several times throughout the series, despite the fact that it shouldn't be possible.
(Editor's Note: Cadpig may just be a lot stronger than she seems.)
When Lucky was looking into the window, he was being supported by the other three main pups (in other words, they formed a totem pole). After they all got off each other and Lucky heard Cruella coughing, he just suddenly hopped back up to the window!
The cart crashes Cruella into the door, and the door falls on her, but then the cart suddenly disappears.
Cruella's Memo: Tell my doctor I'm not paying him real money for bandaging fake injuries.
(The characters are relaxing at Hiccup Hole)
Spot: C'mon, Pug's gonna be looking for us!
Lucky: Relax, that bonehead couldn't find his butt with both paws!
(Lt. Pug appears, he was eavesdropping on their conversation)
Lt. Pug: Freeze, hairballs! You traitors are all going down!
Lt. Pug: Don't but me, Cadpig!
Cadpig (cheerfully): That's right, Cadpig! See what happens when you try?
Pug: If you dirt weasels think that this is going to be another session of Sunday in the park with Grandpa, then think twice!
Cadpig: Can I think happy thoughts, Lieutenant?
Anita: Having you join us, Cruella, was such an unexpected surprise.
Cruellal: Well, I knew that hang up on my voice mail must have been you calling to invite me.
Lucky: Only geeks learn barking code, and only losers teach it.
Pug: I took command. I faced the enemy. Granted, it was a fictional enemy, but those are the worst kind.
Rolly: You sure she's faking it? I've seen healthier looking roadkill.
Lucky: Don't let her fool you. She's a picture of health.
Roger (after he throws a frisbee): Wish it was that easy to get rid of Cruella. Maybe if I tied a dollar around it.
Pug: I recieved in urgent warning message, Colonel, sir!
Colonel: What message was that, Lieutenant?
Pug: Yip Yap Yow!
Pug: Slavering hoard of cats landing at 0800!
Spot: If you guys were paying attention, we'd be in much better... YOW!
Lucky: What was that?
Cadpig: Spot's in some kind of trouble.
Lucky: I got it! "YOW" means "trouble"!
Cadpig: I shall wash, but I shan't be clean.
Pug: True, it's not like the good old days. Back then, you can drop a piano on them, or chase them under a steamroller.
Pug is referring to a lot of jokes that have been used in old cartoons.
The episode title "Purred it Through the Grapevine" is a play on the 1960's song I Heard It Through the Grapevine.