When Zoot takes a Polaroid picture of Nora and Animal, she is touching him with her left arm. When the actual picture is shown, she is touching him with her right arm instead.
At the 2:15 mark, drink doesn't have a straw. Then it has a straw when placed on the desk.
When Dr. Teeth is pouring the paint, you can see the puppeteer's arm is visible on the left side of the screen/Dr. Teeth's right hand.