<P> Blue's Clues is an American children's television series airing on the Nickelodeon family of channels . The series takes place inside a picture book world in which everything is made of paper cutouts, clay, and other craft materials . It is presented by a live - action human host who lives in a yellow house inhabited by everyday objects that talk and move . </P> <P> Steve Burns hosted the series from its debut in 1996 until 2002, when the part was taken over by Donovan Patton . The program features an ensemble cast of animated characters who interact with the host . Co-creator Traci Paige Johnson voices the title character, a dog named Blue who communicates through distinctive barks . The series' composers Michael Rubin and Nick Balaban voice Mailbox and Mr. Salt, respectively . </P> <P> In addition to the main characters, the show included various newly - introduced recurring characters and guest stars throughout its run . Some guests appeared as live - action companions of the host, while others voiced an animated cameo role . When a spin - off series titled Blue's Room premiered in 2004, a group of puppet characters were introduced as new friends of Blue . </P>

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