Hippo: River Horse
Lunis, Natalie / Barthel, Tony / Lewison, Rebecca
A hippo's mouth is huge, measuring about four feet (1.2 m) from top to bottom when open. Thats big enough for a six-year-old kid to fit inside! These big mouths make a lot of noise. Hippos can produce a 115-decibel roar thats as loud as a train engine. They also make softer noises such as croaks, clicks, and bellows that are heard in the air and underwater at the same timesomething no other mammal can do. These are just some of the interesting...