When it was shown on USA's Cartoon Express between 1984 and 1992, a lot of the shows featured what I'm now convinced were a couple of original 1976 bridging titles of The Scooby-Doo/Dynomutt Hour. First the intro was similar to the 1978 syndie titles but shorter, and featured Scooby in them; second, the end titles featured the credits flashing above Scooby and Dynomutt.
So to those out there who saved VHS copies of Dynomutt Dog Wonder from USA's Cartoon Express in the 1980s---please fashion a video file of these titles and send 'em in! 8)