Coypu this invasive species's endurance controversial to human occupants throughout most of its range. The genus name "Myocastor" derives from the two Ancient Greek words (), meaning "rat, mouse", and (), meaning "beaver". Literally, therefore, the name "Myocastor" means "beaver rat". Two names are commonly used in English for "Myocastor coypus". The name "nutria" (from Spanish "nutria") is generally used in North America, Asia, and throughout countries of the former Soviet Union; however, in most Spanish-speaking countries, the word "nutria" refers primarily to the otter. To avoid this ambiguity, the name "coypu" or "coipo" (derived from the Mapudungun language) is used
Jessie (given name) Jessie (given name) Jessie is a given name in its own right, but may also be a nickname for the given name Jessica. It is generally considered the feminine form of Jesse. The name Jess is also a given name. It, or Jesse, may be used in Spanish as a nickname for the male name Jesus. In Celtic usage, Jessie is not related to Jessica. It is considered a pet form of the name Jane or Jean (feminisations of John). This is expressed in Gaelic variants as the names Seana/Seóna (Shawna) or Sìne (Sheena). Related feminine names taken from John