This news article reports on a study revealing the importance of the proboscis monkey's large nose in vocal communication. Researchers used CT scans and computer simulations to demonstrate that the nose's shape modifies the resonant frequencies of calls, creating unique vocal signatures for individual monkeys. This discovery highlights the role of the nose in enhancing vocal identity and provides insights into the evolution of communication, not just in proboscis monkeys but potentially in other species as well. The collaboration between scientists and the Yokohama Zoo Zoorasia opens exciting new avenues for understanding the link between physical traits and social behaviors in the animal kingdom.