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Diego Marquez is a young action-adventure hero who loves nature and animals. He's also Dora the Explorer's cousin. Diego's mission, with help from young viewers at home, is to help rescue an animal in trouble. He's bilingual and speaks Spanish often, has great observation skills and cool scientific tools that help him succeed in his goals while introducing kids to animals' sounds, movements, habitat, diet and family.
- Creators: Chris Gifford, Valerie Walsh
- Starring: Jake T. Austin, Rosie Perez, Keeler Sandhaus, Constanza Sperakis, Thomas Sharkey
- TV Network: Nickelodeon
- Premiere Date: Sep 6, 2005
- Genre: Kids family
