In 1937, Finland released seven American beavers to restore its extinct native beaver; scientists learned 36 years later that they were a different species

In a surprising turn of events, Finland inadvertently introduced North American beavers in an attempt to restore its native species. These newcomers thrived and rapidly expanded their territory, leading scientists to uncover vital genetic distinctions between the species. Consequently, the proliferation of these beavers has sparked competition with the local Eurasian beavers, presenting a fresh challenge for wildlife management efforts in Finland.
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