There's a good reason why the howler monkey got its name--its howls aren't just loud, they are louder than any other monkey in the forest. In fact, this little noisemaker is one of the loudest animals in the world Its booming sounds can be heard for at least a mile (1.6 km). These are just some of the surprising facts kids will discover as they learn about the howls, growls, and roars that these noisy creatures make. Eye-popping photos and clear,...