- Acting for Two: Many of the puppeteers portray 2 or more characters, with some of them* also doing voice work for those secondary characters on occasion.
- Cross-Dressing Voices: In the Mexican Spanish dub, María Fernanda Morales voices the male Baby Sinclair.
- Same for the Brazilian Portuguese dub, where Baby voice actress is Marisa Leal.
- Edited for Syndication and Clumsy Copyright Censorship: Because of music clearance issues, the Netflix, WatchABC, and Hulu version of "A New Leaf" replaces the scene of Mr. Richfield singing "Purple Haze" while high with an alternate scene of Mr. Richfield singing an original song about how happy the happy plant is making him. It's not as clumsy as other examples, but it is a screw to people who wanted to see the episode as originally aired.
- On a lesser note, the original run of the series on ABC had a laugh track, which was removed for syndication and home video releases. Many agree the series is better without a laugh track. The foreign dubs also lack the laugh track as well.
- In Memoriam: A dedication to Jim Henson appears in "The Mighty Megalosaurus". Henson died before the series premiered on ABC.
- Missing Episode: The Disney Channel did not rerun "Baby Talk" or "Dirty Dancing".
- The Other Darrin: Played with. Fran's animatronic was redesigned for the second season so it absolutely does not resemble her first incarnation, but her voice actress (Jessica Walter) stayed on and played her for the entire series.
- Out of Order: Even though Charlene grew a bigger tail in "Charlene's Tale", certain episodes filmed prior showing her shorter tail such as "Employee of the Month" and "Unmarried... with Children" aired after it. There's also the seven episodes filmed prior to the series finale that were shown afterwards when the show moved to syndication.
- Playing Against Type: Jessica Walter is now known for playing cynical and abusive matriarchs rather than traditional sitcom moms.
- Screwed by the Network: During production of the fourth season, ABC cancelled the series altogether and aired "Changing Nature" as the series finale.
- Torch the Franchise and Run: This is why the series ended with the ecological disaster that killed off the dinosaurs.
- What Could Have Been:
- This was originally intended to be a dramatic feature film called The Natural History Project with Warner Bros. set to distribute and Jim Henson directing. However The Land Before Time was released and Henson decided to turn the idea into a sitcom, which CBS greenlighted. It wasn't until Henson's death and CBS putting the show into turnaround that the show got made.
- A Dinosaurs movie was planned at one point, but the project fell through.
- In the early development phase, Ethyl was originally conceived as a pterodactyl who hung upside-down in the closet, but after coming up with a few story ideas for her, they quickly realized that keeping her in the closet would limit what they could do.
- The only puppet that still exists is Baby Sinclair, aside from a somewhat degraded unisaur head. The latex used to make the puppets degrades quickly in light, so most of them disintegrated rather fast.
Trivia / Dinosaurs