The orangutan is one of humankind’s closest relatives – in fact, we share nearly 97% of the same DNA. Unlike other great apes, such as chimpanzees, gorillas and bonobos, these gangly guys don’t like to live in groups. A female will usually have a baby (or two) with her, but males like to be alone. Orangutans are noisy creatures when they want to be, making loud howls and bellows that can be heard for miles around! It’s usually the males that make these calls so that they can stay out of each other’s territory.