Go, Diego, Go!

Go, Diego, Go! is an American animated educational interactive children's television series that premiered on Nickelodeon on September 6, 2005 in the United States. It is a spin-off of "Dora the Explorer", as both were created and executive produced by Chris Gifford and Valerie Walsh Valdes, and follows Dora's cousin Diego, an 8-year-old boy whose adventures frequently involve rescuing animals and protecting their environment.
The series aired for five seasons consisting of 80 episodes in total premiered in primetime on Nickelodeon on Tuesday, September 6, 2005 at 8:00 p.m. The show aired in reruns on "Nick on CBS" for 11 months and 3 weeks from September 17, 2005 to September 9, 2006.
Plot.
The show features an eight-year-old boy named Diego (voiced by Jake T. Austin, Seasons 1-3; Matt Hunter, Season 4; Brandon Zambrano, Season 5), who helps animals in danger, mainly in the rainforest. His cousin is Dora (voiced by Kathleen Herles) from "Dora the Explorer", as revealed in multiple episodes. Diego was first introduced in an episode of "Dora the Explorer" entitled "Meet Diego!" (originally voiced by brothers Andres and Felipe Dieppa). Dora makes several appearances throughout the series, usually without Boots by her side.