David Cassidy's recording of "The Puppy Song" was released on a single (Bell 45-413) in the US in October of 1973.
In 1973, Cassidy recorded a series of radio advertisements promoting the Air Force ROTC. The spots included snippets of "The Puppy Song."
Cassidy's version of "The Puppy Song" is available as a bonus track on a reissue of a Partridge Family CD called The Definitive Collection.