Voice of the Scout.

If it was DB Sweeney, they would not give credit for the smaller role as well (unless it was significant like if he also voiced Zini or Bruton). But aren't there a few "additional voices" as well? I think Frank Welker may be at least involved as the voice of some of the non-speaking dinosaurs. But not the carnotaurs or raptors. Big cats are used for the Carnotaurs while a single chihuahua was the voice of the raptors.