Climb into the ring, and see if the fascinating pufferfish can stand up to the huge hippo. At first glance, it doesn't seem like much of a match-up. But each animal has some amazing features and adaptations. Readers will soon learn that there's a lot more to discuss than just size. From their relative strength to their predator protections, readers will love discovering information about these popular animals through humor and narrative nonfiction text. This is a high-interest topic perfect for all students, but it will be especially engaging for struggling or relucatant readers. Discussion questions are included for futher conversation and debate. A table of contents, glossary with pronunciations, further resources, and an index enhance comprehension for developing readers.