Continuity mistake: When Mrs. Otterton walks into Chief Bogo's office, in the shots facing the door there are two screws properly placed on the light switch plate, but when Chief Bogo shuts the door after Bellwether leaves, those two screws have vanished. Additionally, the distance between the door handle and the switch plate changes as well. (00:32:00)
Continuity mistake: While Judy is heading to the city, outside the fish town place, there a female elephant with two kids dressed like Elsa and Ana from Frozen but when she gets to the terminal those elephants are also outside the building.
Continuity mistake: Judy comes back from work and throws her notepad and cell phone on the table. When the angle changes the notepad has vanished.
Chosen answer: 1. No, it's not, that is Travis. The weasel who was a childhood friend of Gideon has brown fur, but when officer Hopps chases the Duke, the Duke's fur colour is brownish orange. 2. The Duke has gone through the period of his prison time, so he did get out - maybe the Zootopia laws are different than ours.