Dora the Explorer

Think you know everything about Dora the Explorer? As the bilingual adventurer celebrates her 10th anniversary — with Dora's Big Birthday Adventure (Sunday, 8/7c, Nickelodeon) — here are some things you may be surprised to learn.

1) The first Spanish word taught on the show when it debuted in 2000? Azul (blue).

2) Dora's had two voices: In 2008, Caitlin Sanchez took over the role from originator Kathleen Herles.

3) The cartoon is seen in more than 151 markets around the world and is translated into more than 30 languages.

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