4 - 1The Hyena and the Mighty Sep. 14, 2007- 4 - 2Oh Henry Sep. 14, 2007
- 4 - 3My Feral Lyon Sep. 21, 2007
- 4 - 4A Mid Semester Life's Dream Sep. 21, 2007
- 4 - 5The Ivy League Sep. 28, 2007
- 4 - 6Robo Frog 3000 Sep. 28, 2007
- 4 - 7The Notorious Windsor Gorilla Oct. 05, 2007
- 4 - 8Ingrid Through the Out Door Oct. 05, 2007
- 4 - 9Glazed and Confused Mar. 30, 2008
- 4 - 10Hygiene Hijinks Apr. 10, 2008
- 4 - 11Mandrill of the House Apr. 10, 2008
- 4 - 12Synch or Swim Apr. 17, 2008
- 4 - 13Lyon's Anatomy Apr. 17, 2008
- 4 - 14Human Behavior Apr. 24, 2008
- 4 - 15Four Eyed Jake Apr. 24, 2008
- 4 - 16Where in the World Are Adam's Parents? May. 01, 2008
- 4 - 17Mountain Dude May. 01, 2008
- 4 - 18Animal School Musical May. 25, 2008
- 4 - 19A Very Special Boy Jul. 27, 2008
- 4 - 20Knights of the Multiplication Table Jul. 27, 2008
- 4 - 21Wild Thing Jul. 27, 2008
- 4 - 22Lonely Lyon Jul. 27, 2008
- 4 - 23A Whole Zoo World Jul. 27, 2008
- 4 - 24A Thanksgiving Carol Nov. 27, 2008