Mammal: Learn about the diverse and fascinating

Learn about the diverse and fascinating world of mammals, from humans and other primates to big cats and dolphins. Explore their characteristics, habitats, threats and conservation status with photos and facts. What is a mammal? Mammal characteristics, definition of a mammal , info, facts & pictures for kids, students, & teachers. The ultimate guide to mammals. Introduction Mammals are an incredibly diverse group of vertebrates that occupy nearly every habitat on Earth. Their evolution, complex behaviors, and unique physical traits have made them one of the most fascinating classes in the animal kingdom. In this introduction, we explore what mammals are, how they are classified, and trace their evolutionary journey from early synapsids to the modern species we know today.