Many of us remember Catscratch, though much material of the show itself hasn't been very well reserved.
Lost Videography Edit
The Complete Series Edit
The episodes themselves are a huge piece of lost media, save for "Bringin' Down The Mouse" and "Love Cats" (which were released on DVD individually.) The most we had for an English series release were streams on the late site TurboNick, which are unfortunately no longer available.
The Foreign Dubs Edit
Foreign dubs are commonly lost with cartoons, and Catscratch is, of course, no exception. Recorded Broadcasts of the dubs have surfaced, but it takes some digging to find them. They were once hosted on this very site, but were all taken down due to copyright violations. The French dub, Chadébloc was available in clips at Nick,fr, and while the pages are still there, the videos aren't. The only legally released dub of Catscratch that's still up and running to this day is the German dub, KatzeKratz on Nick.de, Nick.ch and www.nickelodeon.at.
Lost Extras Edit
Every so often, Nick.com would have extra scoops of Catscratch behind-the-scenes uploaded to their site. One of which included a behind-the-scenes of the making of the next-to-last episode "Spindango Fundulation". Another compiled fan art that was sent to the studio, one of them being Christmas themed, according to Twitter user Jake (Bitmap). Doug TenNapel recorded videos of himself drawing the three cats and noting the design influences. The only one that's still (remotely) around is "How To Draw Mr. Blik".