The nutria, also known as coypu, is a large semi-aquatic rodent native to South America. It has a long, cylindrical body, webbed feet, and a distinctive round tail. Nutrias are typically brown or gray in color and can weigh up to 20 pounds. They primarily inhabit wetlands, marshes, and riverbanks, where they feed on aquatic plants and grasses. Nutrias were introduced to various regions, including the United States and Europe, for fur farming. However, they have become invasive in some areas, causing damage to ecosystems and agriculture. Their burrowing habits can lead to soil erosion and the destruction of native vegetation.