And, they've gone ahead and replaced all the characters with cats.
You'll notice some minor plot inconsistencies. For example, there's now a laser-pointer storyline. Also, there are scratching posts. None of this matters, however, once you see the feline version of Crazy Eyes.
Besides, the cat version still drives home how annoying Piper can be. And, isn't that what the show's really all about anyway? (Mashable)