Was assistant animator Stod Herbert a lyricist, too? A Google search for "Stod Herbert" turned up, in addition to credits on several Ralph Bakshi features, this item from the sheet music collection at the San Jose library:
Title: Baby What I'm Gonna Do To You
Composer(s)/Lyricist(s)/Arranger(s): Deranja, Jack; Ciarocchi, Gene; Herbert, Stod
Music type: Piano Notes.
There's nothing beyond the name to connect animation Stod to the Stod of song. Searches on the ACAP and BMI websites came up empty.