Variant spelling of 'coypu,' a large rodent native to South America, also called a nutria.
From the Tupí language 'coiú,' entering European languages through Portuguese contact with South America. 'Coyure' is an early or variant English spelling.
Coypu (coipu/coyure) are absolutely invasive in Europe now—they were brought from South America for fur farming, escaped, and now they're destroying wetlands and threatening native species, which is a cautionary tale about how one animal introduced to the wrong place can cause ecological chaos.
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