Rodentia, commonly known as rodents, is a diverse order of mammals characterized by their continuously growing incisors. This group includes familiar animals like mice, rats, squirrels, and beavers. Rodents are found all over the world, except in extreme environments like deserts and polar regions. They play essential roles in ecosystems, such as seed dispersal and serving as prey for many predators. Rodents are known for their adaptability and varied diets, which often consist of seeds, fruits, and plants. Their unique dental structure allows them to gnaw and chew effectively, making them successful survivors in many habitats. With over 2,000 species, Rodentia is the largest order of mammals, showcasing incredible diversity in size, shape, and behavior.