I confess that when a wizardly kitten showed up in Duane's wizard series, it gave me that shark jump feeling. Maybe that's why I'd put off so long in dipping into this spin-off about cats that maintain the gates between the worlds in Grand Central Station. They are anthropomorphized, but with enough weirdness to make it interesting. It gets pretty sad and violent by the end. And if you've got cats, why not dinosaurs? Anyway, there are cameos from the main series. I did enjoy reading it, but somehow it didn't fit all together for me.