Literally my first reaction was "What the—?"
https://www.facebook.com...7483639071623&type=3 

Yep, DFE's two Saturday morning cartoons for NBC in 1972 are coming out on DVD...though I wonder if they'll actually try to seek out good prints like that one other firm did for "The Super 6".

From a sound effects perspective, these two shows are notable as DFE's first projects in which they began actively using much more Hanna-Barbera SFX than before, in tandem with the WB, Jay Ward, and (handful of) H-B SFX they were using already (the first episode of "The Barkleys" has the H-B temple block riot, in addition to Mel Blanc's loud "Why don'tcha look with your—" followed by the usual Treg Brown junk crash!).

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Talk about random.

They're two animated series which the DePatie-Freleng duo created and produced in 1972, along with another talented duo: Joe Ruby & Ken Spears, who worked during many years as writers in Hanna-Barbera, quite before they having their own studio (Ruby-Spears Enterprises) in 1978.

From a sound effects perspective, these two shows are notable as DFE's first projects in which they began actively using much more Hanna-Barbera SFX than before, in tandem with the WB, Jay Ward, and (handful of) H-B SFX they were using already (the first episode of "The Barkleys" has the H-B temple block riot, in addition to Mel Blanc's loud "Why don'tcha look with your—" followed by the usual Treg Brown junk crash!).

Well, I just finished watching one episode of "The Houndcats" on YouTube and I think the H-B SFX fit to the show. It feels much more like a H-B cartoon on its character designs. So I consider it a H-B knock-off (up there with Heathcliff both the Ruby Spheres and DIC versions, Garfield and Friends, Dennis the Menace, Ren & Stimpy, and the Groovie Goolies).

Many people from Hanna-Barbera were involved in the making of these series produced by DePatie-Freleng. And it wasn't only Joe Ruby & Ken Spears. For example: the Kenneth Muse's animation is very frequent on these series. As also is very frequent the use of Hanna-Barbera sound effects.
The Kenneth Muse's animation is also seen in other DePatie-Freleng series as: The Adventures of Dr. Dolittle (1970, produced in association with 20th Century Fox) and Bailey's Comets (1973); as also in the theatrical shorts, such as: The Ant and the Aardvark (1968-71), Roland & Rattfink (1968-71), The Tijuana Toads (1969-72), The Blue Racer (1972-74), Hoot Kloot The Sheriff (1972-74), and also in a Pink Panther short from 1974.

I can even swearing that I saw a Pink Panther short animated by Carlo Vinci somewhere...
It was that one in which the tiny-sized nosy goes to the psychiatrist, to confess about the Pink Panther, who comes driving him crazy.