Dora the Explorer has been voiced by two different girls over the years.   Her original voice was done by Kathleen Herles.  Caitlin Sanchez now does the voice of Dora.

In an interview with Clevver TV Caitlin discusses what it is like to be the voice of Dora the Explorer; including what the things she must complete for the production of the Dora the Explorer movies and episodes.

Video of an interview with Caitlin Sanchez.