Coypu described by Juan Ignacio Molina in 1782 as "Mus coypus", a member of the mouse genus. The genus "Myocastor" was assigned in 1792 by Robert Kerr. Geoffroy Saint-Hilaire, independently of Kerr, named the species "Myopotamus coypus", and it is occasionally referred to by this name. Four subspecies are generally recognized: "M. c. bonariensis", the subspecies present in the northernmost (subtropical) part of the coypu's range, is believed to be the type of coypu most commonly introduced to other continents. Comparison of DNA and protein sequences showed that the genus "Myocastor" is the sister group to the genus "Callistomys" (painted tree-rats).
Precious (given name) were 154 American girls given the name. In the United States, the name has been used predominantly by African Americans. According to one study, of 454 girls named Precious in California during the 1990s, 431 of them were African American. It remained a popular name in the Philippines, where it was the ninth most popular name given to newborn girls in 2011. There were 394 newborn Filipino girls named Precious in 2011. Precious (given name) Precious is a predominantly feminine given name derived from the English word meaning "of great worth." It is also in occasional use for males. It