While Officer Levitt is in the Squad Room holding Max the dog, the badge that he is wearing on his uniform is a hat badge instead of the correct chest badge.
At 15:00, when Levitt comes into the squad room with the dog, he is wearing a hat badge on his uniform shirt instead of the proper NYPD shield that should be worn. Also, he is wearing his handcuff case upside down.
When Levitt is restraining the barking dog and the other officers retreat across the squad room, the dog's trainer is briefly visible on the left hand side of the frame, next to Harris.