The opening narration where Shoeshine describes his job as police bomb squad dog and states that he was a genuine success. Then in the middle of the mayor's speech, Shoeshine sets off an alarm and the cops open the crate to reveal... a piece of ham! Thus leaves him humiliated by the rest of the squad dogs.
Shoeshine: (narrating) All right, I'll be honest with you. I wasn't exactly the best dog on the force. In fact, I was probably the worst. The ham was just the latest of my mistakes. Like the time I chewed that extension cord and it was still plugged in. Or when I met that cute poodle and it turned out to be a guy. It's hard to feel destined for greatness when you keep messing up. But destiny's a funny thing. It'll creep up on you when you least expect it. (A tall thug grabs Shoeshine and carries him over to a big black van) Cad: Gotcha! Last one for tonight.
When Barsinsiter prepares to use the serum on Shoeshine... when the dog sneezes on him.
Cad: Gross! Your mouth was open! (Barsinister wipes his face and glares at Cad) Barsinister: Just hold him!
As Dan leaves the house for work he tells an unwilling Jack to watch Shoeshine for him.