While hyenas are most famous for the loud "laughing" noises they make, some of these social animals can produce a wide variety of sounds. The spotted hyena, for instance, will groan, grunt, giggle, and make whooping sounds that can be heard from miles away While these noisy carnivores may look like they are similar to dogs, they actually are more closely related to cats. These are just some of the fun facts kids will discover as they learn about...