How many movies have Jay Bixsen and Kenneth Mars collaborated on?

They have worked on 9 movies together! Their first movie together was The Land Before Time II: The Great Valley Adventure (1994) while their highest rated movie together was The Land Before Time X: The Great Longneck Migration (2003). They have not worked together since The Land Before Time XII: The Great Day of the Flyers (2006). They are most known for their family films together.