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Maybe a rerun of the Cubitus (aka Wowser)
anime?
EDIT: Or it could have been Dogbert from the Dilbert animated series... Can you remember any more details about the show? Other characters maybe?
Edited by Embryon "If it ain't broke, don't fix it. And even if it is broke, just ignore it and maybe it'll be sort of OK — like the environment."The Secret Files of the Spy Dogs. http://www.monova.org/torrent/2803760/THE.SECRET.FILES.OF.THE.SPYDOGS.S2.PROPER.DSR.XVID%28S-MOUCHE%29.html
(not saying to download it there, but we're not allowed to hotlink images and those are some good screencaps to show the characters)

There was a show on the European Fox Kids in 2002 or earlier. I can only remember there being a white dog standing on his hind legs. And no, this ISN'T Brian from Family Guy!