The COYPU, also known as the nutria, is an aquatic South American rodent. It is a large, semi-aquatic rodent that is native to South America and has been introduced to other parts of the world. The COYPU is a herbivore and feeds on aquatic plants, grasses, and other vegetation. It is an important part of the food chain in its native habitat, providing food for predators such as caimans, snakes, and birds of prey. The COYPU is considered an invasive species in many parts of the world, where it can cause damage to wetlands and other ecosystems.