In this high-definition program, learn all about rhinos and hippos.  What are the similarities and differences?  Are hippos related to rhinos?  How fast can a hippo run?  How do rhinos and oxpecker birds have a symbiotic relationship?  How do hippos and barbel fish have a symbiotic relationship?  How can we help rhinos and hippos from becoming extinct?  The answers to all of these questions and more are covered in depth with detailed graphics, diagrams and exciting video that reinforce important concepts and make learning fun.