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
Boyan (given name) Boyan (given name) Boyan () is a Slavic male given name. The short form of the name "Boyan" used in Bulgaria is "Bobi" or "Bobby" (Bulgarian: Боби). Its female equivalent is "Boyana" (Bulgarian: Бояна). In present days it is used as a given name in Bulgaria written as "Boyan" (Bulgarian: "Боян"), and also in all countries of former Yugoslavia, mainly written as "Bojan" (Serbian and Macedonian: Бојан)/(Slovenian/Croatian: Bojan). The name is recorded in historical sources among the Bulgarians, Serbs, Macedonians, Czechs, Poles, and Russians. There is some discussion as to where the name "Boyan" comes from. It is generally accepted