Prehistoric mammals were fascinating creatures that roamed the Earth millions of years ago. They included a variety of species, such as the giant woolly mammoth and the massive saber-toothed cat. These animals adapted to their environments, developing unique features like thick fur for cold climates or sharp teeth for hunting. Many prehistoric mammals lived during the Ice Age, a time when large parts of the world were covered in ice. As the climate changed, many of these species went extinct, while others evolved into the mammals we see today, like elephants and big cats. Their fossils help scientists understand the history of life on our planet.