Original air date: 6/14/2004 (produced in 2001)
Happy birthday to who? The birthday balloon is flying over the forest, meaning it's someone's birthday today! Help Dora and Boots over Cupcake Mountain, cross Sneezing Snake Lake, and meet other friends on the way to the party at Play Park to solve the mystery of whose birthday it is!
Tropes:
- Birthday Episode: Deals with a mystery birthday being celebrated while Dora and Boots follow the birthday balloon. It's Swiper's.
- Continuity Nod: This was the third time that life jackets had to be gotten out of Backpack.
- Foreshadowing: Swiper does not appear at any point until after the protagonists finally arrive at Play Park, hinting at his identity as the birthday boy.
- Happy Birthday to You!: The actual song was sung at Swiper's birthday, despite the song still under copyright when the episode was produced.
- Mystery Episode: Dora and Boots have to solve the mystery of who the birthday party is for. It's revealed at the end to be Swiper.
- Phrase Catcher: Whenever someone says it's not their birthday, Dora responds, "So it's not: (reviews character's names) birthday."
