| Title | Season | Episode # | First Aired |
|---|---|---|---|
| The Mysterious Cheese Thief | 1 | 44 | Friday May 30, 1975 |
| The Parasite Fly | 1 | 34 | Friday May 16, 1975 |
| The Reluctant Musician | 1 | 38 | Thursday May 22, 1975 |
| The Runaway Ant | 1 | 23 | Thursday May 1, 1975 |
| The Show-Off Cockroach | 1 | 35 | Saturday May 17, 1975 |
| The Weight-Lifting Competition | 1 | 43 | Thursday May 29, 1975 |
| Uninvited Guest | 1 | 15 | Saturday April 19, 1975 |
| Willi Stands Guard | 1 | 50 | Saturday June 7, 1975 |
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