Continuity mistake: Before Dora and friends enter the city the moon is half-full. When they enter the place it's a full a moon.
Continuity mistake: When Dora is talking to Randy by his locker she puts the cupcake down in his locker to draw on his shirt. In a later shot when the bell rings it appears back in her hand.
Suggested correction: She picks it back up as she puts the marker back in his locker.
Continuity mistake: When Dora offers Diego the chocolate biscuit it looks gray except for a brief shot where it looks dark blue (as the package does). Then it swaps back to grey.
Continuity mistake: When Dora finds the bad guys' camp in the jungle, Sammy and Randy are meters behind catching up. Sammy stops and Randy walks up to Dora, leaving Sammy 5 meters behind. A shot later Sammy and Randy are standing side by side.
Continuity mistake: When Dora and her friends find her parents' abandoned camp the stuff next to a red box changes positions between shots. Check the light blue box, for example.
Continuity mistake: When Dora arrives at the airport the passers-by have no continuity between the front and back shots.
Continuity mistake: After Dora feels embarrassed at the school dance she is comforted by her Grandma. Her fringe swaps between parted or not between shots.