Sentences with phrase «carried black rats»

During the 18th and 19th centuries, European explorers unintentionally carried black rats (Rattus rattus) and brown rats (Rattus norvegicus) on their ships as they visited new lands, eventually introducing the two species to every continent but Antarctica.

Not exact matches

During the Black Plague, the believers believed that the plague was the work of satan, and they also believed (without any foundation for the beliefs at all) that cats were the devils familiars, so to fight the plague, they killed all the cats they could find, eliminating the best defence they could have to the plague... the cats that kill the rats who's fleas carried the plague.
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