Dave models his investigative methods on some of the all-time greats like Columbo, Marlowe, and Horatio Caine. A lot of other cats might scoff at the idea of walking in a wet bathtub, but not Dave. Dave doesn't mind getting his feet wet if that's what is necessary for his investigation. When something weird happens, most cats run away, but Dave runs toward the commotion. That's true commitment.
Just look at those eyes. Those are the eyes of a battle-tested investigator.