Humorous:
* The Dog Who Thought He Was a Monkey
* Monkey Business: A Dog's Tale
* Tail Wags and Banana Peels: A Canine-Primate Caper
* Barking Mad and Swinging High: A Dog and Monkey Story
Adventure:
* The Jungle's Best Friends: A Dog and Monkey Adventure
* Whispers in the Vines: A Journey of Two Species
* Paws and Claws: A Quest for the Lost Treasure
* Beyond the River, Beyond the Trees: A Dog and Monkey's Odyssey
Emotional:
* The Unlikely Companions: A Dog and Monkey's Bond
* A Bark and a Chirp: A Story of Friendship
* Through the Looking Glass: A Dog and Monkey's World
* The Bridge Between: Two Worlds, One Heart
Other:
* The Dog, the Monkey, and the World
* Canine and Primate: A Study in Contrasts
* The Secret Language of Dogs and Monkeys
* Unlocking the Animal Kingdom: A Dog and Monkey's Perspective
For more specific titles, consider these questions:
* What is the genre of the book? (fiction, non-fiction, children's, etc.)
* What is the main plot or theme of the book?
* What is the tone of the book? (funny, serious, adventurous, etc.)
Once you have a better idea of the book's content, you can choose a title that accurately reflects it.