Continuity mistake: When Pinocchio is talking with Stromboli, there is a bag of gold on the tables with coins spilling out of it. But after Stromboli locks Pinocchio in the cage and comes back to the table, the bag is empty and lying on top of the coins.
Continuity mistake: When Lampwick sprouts a tail, the patch on the seat of his trousers has stitches around it. These stitches disappear moments later.
Continuity mistake: When Pinocchio says he is going home, Stromboli starts laughing. Pinocchio asks if he thinks that's funny, and he replies, "Sure." In this shot, there is a gold coin on top of Stromboli's knife, but in the next shot it's gone.