[[WMG: All the Hanna-Barbera shows take place in one universe.]]
On a trip to Europe, [[WesternAnimation/JonnyQuest Dr. Benton Quest]] discovered medieval texts telling of [[WesternAnimation/TheSmurfs small blue creatures]] of human-like intellect. He eventually runs into a live specimen as well as a similar race of [[WesternAnimation/TheSnorks aquatic beings]] described in 17th-century naval reports.

Dr. Quest creates intelligent talking animals by mixing Smurf and Snork DNA with various species. But many of the test subjects, such as WesternAnimation/YogiBear, [[WesternAnimation/TheHuckleberryHoundShow Huckleberry Hound]], WesternAnimation/MagillaGorilla, Franchise/ScoobyDoo and WesternAnimation/TopCat's gang escaped into the wilds or into the cities. As these animals grew more intelligent, some like WesternAnimation/HongKongPhooey, WesternAnimation/QuickDrawMcGraw, [[WesternAnimation/TheAtomAntShow Atom Ant]] and WesternAnimation/SecretSquirrel would help humans in keeping the peace as superheroes or secret-agents. Government genetic engineering efforts to create their own heroic talking animals, robots and superheroes ranging from [[WesternAnimation/DynomuttDogWonder Dynomutt]] to WesternAnimation/TheImpossibles and WesternAnimation/FrankensteinJr met with mediocre success or just making things worse.

When The Valley of the Dinosaurs was discovered in South America, the U.S. government rushed to create more intelligent creatures, though only resulting in rather docile prehistoric experiments. As things on the surface continued to get worse, humanity's elite bailed from the surface, ranging from going [[WesternAnimation/TheJetsons into towering ivory "magic sky castles"]], [[WesternAnimation/{{Jabberjaw}} under]] [[WesternAnimation/{{Sealab 2020}} the sea]] or [[WesternAnimation/TheHerculoids into]] [[WesternAnimation/SpaceGhost space]]. The people and intelligent animals, prehistoric and otherwise, that were left behind reverted to a more prehistoric culture that still resembled the lost ways--a [[WesternAnimation/TheFlintstones modern Stone Age]], if you will--followed by [[WesternAnimation/TheRomanHolidays a slightly less ancient culture]].

As humanity declined, the more human-like talking animals would create their own civilizations resembling those of humanity before the fall including [[WesternAnimation/SwatKats Megakat City]] and an undersea city with the law being kept by WesternAnimation/FishPolice.

''WesternAnimation/LaffALympics'', ''[[WesternAnimation/YogiBear Yogi's Gang]]'' and ''WesternAnimation/WackyRaces'' confirm this for early Hanna-Barbera.
* How do the later Cartoon Cartoons fit into this?
[[WMG: All the Hanna-Barbera shows take place in one universe w/ better research and logic]]

Hanna Barbera shows did not have a set rule, but has the standard logic that we can see stand true back at MGM, through their own and into some modern attempts at them.

All HB shows exist in one universe, but it is a faulty timestream. The amount of characters who time travel or warp reality are numerous (The Great Gazoo, Shazzan, Jeannie and Babu, The Pastmaster, The Smurfs in the last season, Cupcake, plus one-time baddies like Dr Millennium, Time Slime, Timeatron, etc.) that if one takes the assumption they all co-exist in order to crossover, then all that damage to the timeline has created many cracks and issues, that resulted in times where canon meant something and times where it was irrelevant, because the timeline was changed without anyone realizing.

This, at its' bare minimum, creates reasonable excuses for every continuity problem there ever was or ever will be. This creates the plausible world and why these cartoons sometimes have zero regard for continuity, but sometimes pull it out for pure brilliance (the Herculoids using a ship they captured earlier in the series, the Smurfs being one short of 100 which later revealed because they lost Wild Smurf, ''A Pup Named Scooby-Doo'' bringing back Shaggy and Scooby's sisters, Snagglepuss's earlier antics being blamed on his brother Snaggletooth that shows up in a ''Snagglepuss'' short, etc)

[[WMG: Cartoon Network bubble?]]

In addition to the above, perhaps the real life Turner buyout was a crisis crossover to the Hanna-Barbera world? They exiled Cartoon Network's characters out of their world, but the result ripped shells of their former selves into the Cartoon Network and Adult Swim shows. Also explaining why those shows often feature cameos of older cartoons yet the modern continuations of the Hanna-Barbera shows do not return the favor with Cartoon Network references.

[[WMG: Hanna Barbera hate will be lessned within the decade]]

We get more and more on DVD each year. They get more Facebook pages. They get panels at different cons to either talk about older shows coming to DVD, spotlight on creators and premieres of the new Scooby Doo and Tom and Jerry features. The Flintstones may in fact be getting one of their own if the WWE crossover goes well next year. The truth that they still get advertising money overseas is being made more public as the world connects, and this will all work out for the better.

Older fans will be able to revisit them, they can share them with their kids. Younger people will be able to legally obtain them instead of reading bias critical articles online. They will make up their own minds and more fans will shine through. These new kids will already be internet trained and they will be able to eliminate any feeling the haters ever had the majority online.

[[WMG: Success of the Animated Scooby Movie will present a Hanna Barbera Cinematic Series]]

Given they do have plans for more than one film (four animated ones at least), they will name drop or cameo other characters in the Scooby one. This they probably will hope for other lesser remembered characters to possibly be used in future films or at the very least provide easter eggs for long time fans in the movie.
* This has practically been confirmed as the plan by Tony Cervone.