Galapagos has been mentioned, but I also really liked Sirens of Titan because it deals with and plays with the notion of Fate. I read it at a time when I was just starting to grasp just how many things in the universe must necessarily influence each other and how people believe that the things in front of them are what shapes their lives. Plus, it revolves around a chronosynclasticinfundibulum, which is a fantastic Hang Man word.
My cat's name is Malachi Constant... Sirens of Titan is by far my favorite Vonnegut book, and one of my favorite books period.really liked Sirens of Titan
I love giving my pets full names, though in your case I hope that your cat avoids the "Unk" period of that character's arc. My dog is named Chunkford van Barfolomew and previously I had a pig named "Squeak E. Kleen" though I never knew what the E. could stand for.