Whistle a Happy Tune

Mr.Taylor is having trouble with a dog on his mail route. Eddie volenteers to help keep the dog at bay. Meanwhile Justin takes up the trumpet, but can't play.At Eddie's sugesstion,he begins playing a tape so that it sounds like he's practicing.Eddie is baffled by Ike, the seemingly harmless dog that suddenly snaps.Doug threatens to have Ike sent to ""the room"" if he does it again.Eddie finds out Doug's whistling is making Ike mad. He lends him his ear muffs so that he can't hear it. He saves Ike from ""the room"" and picks up a deed. Too bad not all his plans worked, Justin gets busted.