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A '''rat''' is a medium-sized [[rodent]] found on all inhabited [[continent]]s.  They live on garbage in slums and are also often known to carry disease. The [[bubonic plague]] which killed one third of the population of Europe is attributed to rats which [[disease carrier|carried]] plague-infected

A''rat''' is a medium-sized [[rodent]] found on all inhabited [[continent]]s.  They live on garbage in slums and are also often known to carry disease. The [[bubonic plague]] which killed one third of the population of Europe is attributed to rats which [[disease carrier|carried]] plague-infected

fleas living in their fur. The [[taxonomy|genus]] ''Rattus'' includes over 50 species.

fleas living in their fur. The [[taxonomy|genus]] ''Rattus'' includes over 50 species.