The document summarizes popular mammals found in Yellowstone National Park. It discusses grizzly bears, black bears, wolves, coyotes, foxes, and various hoofed mammals like bison, elk, moose, and pronghorn. It provides details on their physical characteristics, behaviors, and interesting facts. For example, it notes that grizzly bears can weigh up to 800 pounds and bison are surprisingly fast. The document concludes by stating the author learned to create a non-linear PowerPoint and will use the format for teaching.