Different people find different things funny. Monkeys have been compared to humans in many ways, but this volume explores what makes a monkey chuckle. Readers will learn about the emotions behind a monkey's laughter. Is their panting as they play an indication that they are having fun? Do chimpanzees laugh when they are tickled? Readers won't be able to suppress a smile as they learn all about the side-splitting sides of a monkey's emotions. Full-color...