How does Slylock know the painting is a forgery? Because salmon don't swim downstream.
Slylock Fox and Comics for Kids is a newspaper comic strip by Bob Weber Jr., which consists of the Slylock puzzler and a number of other activities. The puzzler consists of the professional detective Slylock Fox and his assistant, Max Mouse, solving a number of mysteries, usually stopping a number of recurring villains.
Tropes used in Slylock Fox:
Affectionate Parody: There's one strip (not official) which has a Satanic accused of stealing a book from the Islamic Book Store. Said book is called "The Satanic Verses". (It also features the only animals wearing shoes in the strip.)
Cross Over: My Cage did a storyline wherein Cassandra Cat was hired and stole money from the company, with Slylock himself appearing later. Word of God states that Max from My Cage was meant to appear in Slylock, but an editor refused it.
Death Trap: Count Weirdly occasionally subjects Slylock and Max to these.
Dull Surprise: Regardless of if he's helping a character retrieve a $10 bill or escaping a death trap, Slylock has the same emotionally detached expression.
Getting Crap Past the Radar: The setup for one January 2007 strip was that Max Mouse had spent the night with a girl-mouse named Melody, before being interrupted by Slylock asking them to spy on a Fence living next door.
Go-Karting with Bowser: One strip has Slylock and Max time traveling with Count Weirdly. It's mainly a tool to dispense facts about dinosaurs, but Slylock and Weirdly seem bizarrely friendly to each other.