The Norway Rat (Rattus norvegicus) .... Despite past efforts to control its population, Rattus norvegicus has had a long history of .... Under certain circumstances, the Norway rat may be a pest. .... (1511 6 )
3 Articles on Animal Testing .... The research hypothesis was that the black rat (Rattus rattus) and the Santiago rice rat (Nesoryzomys swarthy) compete for limited resources which was based on .... (1357 5 )
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