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    "headline": "Five muskrats released by a Bohemian prince in 1905 became a continent-wide invasive species",
    "dek": "A 1905 release of five muskrats by Prince Colloredo-Mannsfeld in Bohemia led to a century-long invasion across Europe and Asia.",
    "prose": "In 1905, Prince Colloredo-Mannsfeld released five muskrats (two males, three females) brought from a hunting trip to America into ponds on his estate at Dobříš, about 40 kilometers southwest of Prague, reportedly intending to farm their fur. [^1]\n\nA study in the Biological Journal of the Linnean Society reported that Britain eradicated its muskrat population by 1939 through a sustained trapping campaign after the animals escaped from fur farms in the late 1920s. [^2]\n\nAccording to the UNL Digital Commons at the University of Nebraska, Prince Colloredo-Mannsfeld brought back five muskrats (two males and three females) from a hunting trip in North America and released them into ponds at his estate near Dobříš, about 40 kilometers southwest of Prague, in 1905. [^3]\n\nThe muskrat population in Bohemia reached an estimated two million animals by 1914, less than a decade after the initial release of five animals. [^4]\n\nBy 1914, nine years after the release, muskrats had colonized the whole of Bohemia, with an estimated two million animals, leading Central European naturalists to call it a calamity. [^5]\n\nThe muskrat's burrowing into earthen flood defenses such as dikes and levees causes damage, prompting the Netherlands to run a permanent trapping program with hundreds of professional trappers removing tens of thousands of animals annually. [^6]",
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    {
      "statement": "In 1905, Prince Colloredo-Mannsfeld released five muskrats (two males, three females) brought from a hunting trip to America into ponds on his estate at Dobříš, about 40 kilometers southwest of Prague, reportedly intending to farm their fur.",
      "source": "Space Daily",
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      "published_at": "2026-09-01T01:34:51.000Z",
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    {
      "statement": "A study in the Biological Journal of the Linnean Society reported that Britain eradicated its muskrat population by 1939 through a sustained trapping campaign after the animals escaped from fur farms in the late 1920s.",
      "source": "The Times Of India",
      "instrument": "News",
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      "published_at": "2026-09-01T18:30:00.000Z",
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      "sources": [
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    {
      "statement": "According to the UNL Digital Commons at the University of Nebraska, Prince Colloredo-Mannsfeld brought back five muskrats (two males and three females) from a hunting trip in North America and released them into ponds at his estate near Dobříš, about 40 kilometers southwest of Prague, in 1905.",
      "source": "The Times Of India",
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      "published_at": "2026-09-01T18:30:00.000Z",
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      "statement": "The muskrat population in Bohemia reached an estimated two million animals by 1914, less than a decade after the initial release of five animals.",
      "source": "The Times Of India",
      "instrument": "News",
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      "published_at": "2026-09-01T18:30:00.000Z",
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      "statement": "By 1914, nine years after the release, muskrats had colonized the whole of Bohemia, with an estimated two million animals, leading Central European naturalists to call it a calamity.",
      "source": "Space Daily",
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      "statement": "The muskrat's burrowing into earthen flood defenses such as dikes and levees causes damage, prompting the Netherlands to run a permanent trapping program with hundreds of professional trappers removing tens of thousands of animals annually.",
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