PERFORMER Steve Whitmire (puppeteer)
  Richard Simmons (voice)

Richard Simmons Dinosaur is an exercise instructor on Dinosaur TV, seen in the third season Dinosaurs episode "Nature Calls." Viewed by Fran Sinclair, Charlene Sinclair, and Monica DeVertebrae, the duckbilled fitness guru encourages the ladies to shake their tails and tighten their tushies.

The character is a parody of Richard Simmons, who also supplied the voice.