* ActingForTwo: As he did in the other Terrytoons show ''WesternAnimation/TomTerrific'', Lionel Wilson voices all the characters here.
* DivorcedInstallment: The ''WesternAnimation/RandomCartoons'' short "Hornswiggle" was initially conceived as a ''Silly Sidney'' short, but was retooled to being about a similar character who was a rhinoceros rather than an elephant, mainly because it was discovered that Nickelodeon didn't have the rights to the Creator/{{Terrytoons}} characters at the time.
* WhatCouldHaveBeen: Jerry Beck wanted to make a ''Sidney'' short for Creator/{{Nickelodeon}}'s ''WesternAnimation/RandomCartoons'', but a number of reasons (including [[WesternAnimation/{{Curbside}} a failed Terrytoons pilot several years earlier]]) led to the short being turned into ''Hornswiggle''.