- Cross-Dressing Voices: Kathryn Mullen and Leslie Carrara as Morton the Elephant Bird for the two respective seasons.
- The Other Darrin: Mostly for season 2, like Martin P. Robinson and Tim Lagasse replacing Bruce Lanoil respectively for the Cat in the Hat and Fox in Socks.
- The Other Marty: The pitch reel had this namesake (Marty Robinson) performing the Cat, a role that would be done in season 2.
- Medium Blending: The show used a mix between live-action puppets and props and CGI settings, despite only coming out less than a year after Toy Story.
- Talking to Himself: For instance, in "Almost There", where the Cat in the Hat and Fox in Socks were in the same scene (both voiced by Bruce Lanoil). Lanoil puppeteers the Fox, while another puppeteer does the Cat (to a pre-recorded voice track by Lanoil).
- Other puppeteers did multiple characters as well.
- What Could Have Been: During production, the original plan was to do episode adaptations based on the original Seuss books as well as do original stories, however, the Seuss estate stated adapting the books were off-limits.
Trivia / The Wubbulous World of Dr. Seuss