An American in the lower gorges

The Coypu also known as the "river rat" (Myocastor coypus) is a species of mammal in the Myocastoridae family, the only surviving species of the genus Myocastor. This large rodent, native of South America, was introduced in Europe in the 19th century for the exploitation of its fur. All coypus present in Europe have either escaped or were released voluntarily in the open. The coypus has no natural predators except for its young which are sometimes the prey of birds like buzzards and barn owls.