russet rice rat
... that populations of the russet rice rat have been shown to have a monogamous mating system?
... that populations of the <b id="mwXA"><a href="./Euryoryzomys_russatus" id="mwXQ" rel="mw:WikiLink" title="Euryoryzomys russatus">russet rice rat</a></b> have been shown to have a monogamous mating system?