Large animals are typically defined as those that weigh over 100 pounds or have significant physical size. Examples include elephants, giraffes, and whales. These animals often have adaptations that help them survive in their environments, such as thick skin for protection or long legs for reaching food. Many large animals play crucial roles in their ecosystems. For instance, herbivores like bison help maintain grasslands by grazing, while predators like lions help control the populations of other species. Understanding large animals is important for conservation efforts and maintaining biodiversity in our world.