In the episode 'Our Own Digs', while Lucky is talking about moving the hay blocks, he runs from one side of the barn to the other. When he starts to run, Spot is where he was standing at the start, but when Lucky gets to the other side of the barn, Spot suddenly appears right next to him!
In the episode 'Goose Pimples', Rolly's ears turn black during one of the scenes.
Cadpig: Now, Lieutenant Pug, Mr. Jaw wants to know why you've been spreading vicious rumors about him behind his back. He finds it... dehumanizing.
Spot: Have you ever seen Lock Jaw?
Pug: Nobody's ever seen him... but I've heard him stomping through the night looking for his favorite dish: Chicken Veronica with a bed of marinated puppies.
Rolly: Is that served with a white sauce?
Cadpig: That was quite a resolution.
Lucky: Shut up, Cadpig.
Cadpig: Lucky? Pug? I think we should define the problem, propose solutions, then choose an act. That will lead to a resolution.
Lucky: The problem is, I seem to have a Pug on my collar.
Cadpig: You okay, Rolly?
Rolly: Why, yes, Cadpig. I've always dreamed of being a throw rug.
Cadpig: We've hiked 10 miles, Sir!
Lucky: That equals 70 in dog miles!
Lock Jaw is based on a real legend.