Warthogs belong to the pig family. You can easily believe that when you see one. They are called warthogs because of the bumps on their faces that look like warts. The difference from the common pig is that warthogs have two sets of tusks. What are these tusks for? Find out by reading this book filled with amazing facts about the warthog. You might be familiar with an adorable warthog cartoon character named Pumbaa. The question is, are warthogs really...