<Li> Jack McGraw as Young Arlo </Li> <Li> Jack Bright as Spot, a 6 - 7 - year - old human caveboy who befriends Arlo . </Li> <Li> Sam Elliott as Butch, a Tyrannosaurus who runs a "ranch" filled with prehistoric "longhorns". </Li> <Li> Anna Paquin as Ramsey, Butch's daughter </Li>

Who is the voice of the t rex in the good dinosaur