#genus_Rattus__Rattus  common house rats; upper incisors have a beveled edge
  supertype:  mammal_genus  a genus of mammals
  member of:  family_Muridae
  member:  brown_rat__brownrat__Norway_rat__Rattus_norvegicus  common domestic rat; serious pest worldwide
  member:  black_rat__blackrat__roof_rat__Rattus_rattus  common household pest originally from Asia that has spread worldwide

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