There is a cat that scares off several supernatural baddies, and a dog that fights spirits and demons.

This world imply difficulty. Convincing someone that a series with great first person, a snarky and awesome main character and a cast just of the same quality around, said protagonist having to use his wits just as much, more in fact, as his powers to win the day, with many pop culture references ready to go in most circumstances, and an hint of pragmatism (the Head of Darth Wannabe when Dresden answered to his 'callenge' by pointing his gun at him XD), great world-building, supernatural monsters who can still look like the traditional deal while many of them have got some changes rejunaveting the archetypes, a escalade in the crazy awesome through the series, and a credible one to boot, emotional moments varying for heart-melting to tear-fountain, with the funny also present and so many other things is worth reading isn't a challenge in any way I can think about. You're already a fan of the Dresden Files, only thing left is beginning to read them.

Now, the only weak spot I can think about is perhaps a slow start with the very first books, but they're still great read. Investigations won't be the main focus of the rest of the series though.

I think it's bad sign the author couldn't use pink for the pun.