Reynard Noir is awesome. Start here. And check this, and the whole Cassandra Cat saga really, and stuff like this and this which is really surprisingly powerful, for a parody strip based on a children’s cartoons.
And it wouldn’t be possible if Slylock Fox weren’t awesome. Not just because of this, but because it’s genuinely awesome; as Josh (who is, you guessed it, awesome) says, it’s got some of the best incidental details of any comic strip out there. Not like some strips which have been mailing it in for twenty years.
[UPDATE: If you got here, as people sometimes seem to, by searching on “Cassandra cat” + NSFW, Bob Weber Jr. asked the guy to take that down. If he’s willing to produce PG-13 Cassandra action I think it’s only fair to respect his wishes to keep NC-17 stuff off the web.]