In 1905, a Bohemian prince released 5 muskrats into his estate. By 1914, their population had exploded to 2 Million

Introduced near Prague in 1905, five muskrats quickly proliferated throughout Europe. Utilizing waterways as pathways, these semi-aquatic rodents expanded rapidly, leading to notable infrastructure issues due to their burrowing behavior. Further intentional introductions for fur farming enhanced their spread across the continent. In contrast, Britain managed to eliminate its muskrat population through consistent trapping measures.