If you like the 'Cat Who' books, try the Mrs. Murphy mysteries by Rita Mae Brown and Sneaky Pie Brown. They feature two cats and a dog that help their owner solve mysteries and the animals can speak to each other and all other animals that live around them. Only the humans can't understand them. I love them; I just eat them right up every time a new one comes out. Hey, when a cat helps write them, you know they're good!