Muskrat
Invasiveness status

In Europe, the muskrat has been included in the list of invasive alien species of Union concern (the Union list) since August 2, 2017. This implies that this species cannot be imported, bred, transported, commercialized, or intentionally released into the environment in the whole of the European Union. Muskrats were introduced to Europe in the early 20th century for fur farming. In many European countries, muskrats have become problematic, damaging flood control systems, crops, and river banks with burrowing activities. Their presence is particularly concerning in areas with delicate ecosystems, where they can outcompete or displace native species. Several European countries have implemented control measures and eradication programs to manage muskrat populations and mitigate their impact.
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