Strains of the Norway species of this animal are the ones used in labs
Laboratory Rats - Canadian Council on Animal Care [PAR] members of this species being designated Norway or Norwegian rats, other than 
the ... initiative and the great majority of the strains of these animals that are ... 
areas of biomedical investigation as ones in which the rat is widely used and... [DOC] [TLE] Food neophobia in wild and laboratory rats (multi-strain comparison) [PAR] Jan 5, 2015 ...