I won't deny the great work Mr. Yarmush did for Arthur's voice in the first 4 seasons, but it just wasn't the same once puberty hit by 2000. That said, I think his voice would have still suit if Arthur wasn't stuck as an eternal 8 year old. Arthur Goes To Highschool? Well, maybe.

I didn't think his original replacement Justin Bradley was that bad - but the problem was his voice was too deep for an 8 year old aardvark. Am surprised they bothered redubbing all the episodes he did, but not Yarmush's Season 5 episodes.