How many movies have Kenneth Mars and Thomas Dekker acted in together?

They have worked on 6 movies together! Their first movie together was The Land Before Time V: The Mysterious Island (1997) while their highest rated movie together was The Land Before Time: 2 DinoRiffic Adventures (2006). They have not worked together since The Land Before Time: 2 DinoRiffic Adventures (2006). They are most known for their adventure films together.