Dennis tries to get a birthday present by saying thank you to his relatives. However, because of Dennis' naughty personality, they take his attempts in a negative way.
| Title | Dennis' Thank-you's |
|---|---|
| Genres | Animation |
| Release Date | 2009-09-28 |
| Episode Runtime | 00 Hours 10 Minutes |
| Season Number | 1 |
| Episode Number | 18 |
| Production Companies | Sticky Pictures |
