A Nutria swimming through the shallow waters at John Bunker Sands Wetland Center in Seagoville, Texas.
Wikipedia has this to say about Nutria:
Two names are commonly used in English for Myocastor coypus. The name “nutria” (or local derivatives such as “nutria- or nutra-rat”) is generally used in North America, Asia, and throughout countries of the former Soviet Union; however, in Spanish-speaking countries, the word “nutria” refers to the otter. To avoid this ambiguity, the name “coypu” (derived from the Mapudungun language) is used in Latin America and Europe. In France, the coypu is known as a ragondin. In Dutch, it is known as beverrat (beaver rat). In German, it is known as Wasserratte (water rat). In Italy, instead, the popular name is, as in North America and Asia, “nutria”, but it is also called castorino (“little beaver”), by which its fur is known in Italy.
In Brazil the animal is known as ratão-do-banhado, nútria or caxingui (the latter from the Tupi language).