<P> Conventional Compact Cassettes carried two audio tracks for stereo sound reproduction . Teddy Ruxpin cassettes used the left track for audio and the right track for a control data stream . The data stream controlled servomotors that moved the eyes and mouth and could also divert the audio signal to Grubby, the companion toy, by means of a proprietary cable . This allowed the two to engage in pre-recorded interactions . Grubby only worked with the initial WOW release of Teddy Ruxpin . </P> <P> If a conventional audio cassette was played in Teddy Ruxpin, this would be detected and its right audio track would be ignored . Early versions of the toy used three servo motors, but this was reduced to two in later versions . </P> <P> From his debut in September 1985 various toy makers have produced Teddy Ruxpin over the years . The first was Worlds Of Wonder from 1985 until its bankruptcy in 1988 . The toy's rights were then sold to Hasbro, and produced again from 1991 to 1996 . Another version debuted in 1998 by YES! Entertainment with another version in 2006, produced by BackPack Toys . Presently Teddy Ruxpin is available from Wicked Cool Toys . </P> <P> Shortly after his debut, Teddy Ruxpin was dubbed the "Official Spokesbear for the National Center for Missing and Exploited Children" in 1985 . </P>

When did the first teddy ruxpin come out