| Title | Season | Episode # | First Aired |
|---|---|---|---|
| The Secret Snake Club | 4 | 40 | Monday February 21, 2005 |
| He's Not Dead, He's My Mascot / Hog Wild | 4 | 41 | Friday April 1, 2005 |
| The Bad News Ghouls / The House of No Tomorrow | 4 | 42 | Friday April 8, 2005 |
| Happy Huggy Stuffy Bears / The Secret Decoder Ring | 4 | 43 | Friday April 15, 2005 |
| Wild Parts / The Problem with Billy | 4 | 44 | Friday June 3, 2005 |
| Wishbones | 4 | 45 | Friday June 10, 2005 |
| Dream Mutt / Scythe For Sale | 4 | 46 | Friday June 17, 2005 |
| Jeffy's Web / Irwin Gets A Clue | 4 | 47 | Friday June 24, 2005 |
| Duck! / Aren't You Chupacabra To See Me? | 4 | 48 | Friday June 24, 2005 |
| Zip Your Fly / Puddle Jumping | 4 | 49 | Monday June 27, 2005 |
| Runaway Pants / Scythe 2.0 | 4 | 50 | Tuesday June 28, 2005 |
| The Firebird Sweet / The Bubble with Billy | 4 | 51 | Wednesday June 29, 2005 |
| Billy Idiot / Home of the Ancients | 4 | 52 | Thursday June 30, 2005 |