Acting
Kenneth Mars
Movies
- The Land Before Time XII: The Great Day of the Flyers2006as Grandpa / Parasaurlophus (voice)
- The Land Before Time XI: Invasion of the Tinysauruses2005as Grandpa (voice)
- The Land Before Time X: The Great Longneck Migration2003as Grandpa (voice)
- The Land Before Time IX: Journey to Big Water2002as Grandpa (voice)
- The Land Before Time VIII: The Big Freeze2001as Grandpa / Lambeosaurus (voice)
- The Land Before Time VII: The Stone of Cold Fire2000as Grandpa (voice)
- The Little Mermaid II: Return to the Sea2000as King Triton (voice)
- The Land Before Time VI: The Secret of Saurus Rock1998as Grandpa (voice)
- The Land Before Time V: The Mysterious Island1997as Grandpa (voice)
- The Land Before Time IV: Journey Through the Mists1996as Grandpa (voice)
- The Land Before Time III: The Time of the Great Giving1995as Grandpa (voice)
- Thumbelina1994as King Colbert (voice)
- The Land Before Time II: The Great Valley Adventure1994as Grandpa (voice)
- We're Back! A Dinosaur's Story1993as Professor Screweyes (voice)
- Shadows and Fog1991as Magician
- The Little Mermaid1989as Triton (voice)
- Police Academy 6: City Under Siege1989as Mayor
- For Keeps1988as Mr. Bobrucz
- Fletch1985as Stanton Boyd
- The Apple Dumpling Gang Rides Again1979as Woolly Bill Hitchcock
- Night Moves1975as Nick
- Young Frankenstein1974as Inspector Kemp
- What's Up, Doc?1972as Hugh Simon
- Butch Cassidy and the Sundance Kid1969as Marshal