Why did Marty think that Judd had shot and killed the dog he found a year ago?
Marty thought Judd had killed the dog because he saw him do it.
Marty thought that Judd had killed the dog because his dad told him he did.
Marty thought the Judd had killed the dog because Judd mistreats Shiloh and he has said that if he loses one dog he will just buy another.