11. Female brown rats ( Rattus norvegicus ) first mate at two or three months. 12. Female brown rats ( Rattus norvegicus ) first mate at two o three months. 13. Much of the genome of " Rattus norvegicus " has been sequenced. 14. Ten pregnant female Wistar rats ( " Rattus norvegicus " ) were flown. 15. Dmits has been blocked indefinitely as a vandal and Rattus nonnus is pretty obviously a sock. 16. Also issued by the label are recordings by Youth in Asia from Canada and Rattus from Finland. 17. Polynesian rats ( " Rattus exulans " ) are present on Teeraina, apparently since prehistoric times. 18. A new species of " Rattus " ( Rodentia : Muridae ) from Manus Island, Papua New Guinea. 19. Today, Boston is known for its innovative efforts to keep the Norway rat ( Rattus norvegicus ) at bay. 20. Systematically they were long placed in the genus Rattus ( referred to as " Rattus natalensis " ).
