A <xref>taxonomic</xref> <xref>family</xref>, within <xref>suborder</xref> <xref>Sciurognathi</xref> (or within <xref>superfamily</xref> <xref>Muroidea</xref>) — the <xref>mice</xref>, <xref>rats</xref>, <xref>gerbils</xref>, etc.
User Defined Definitions
"originally Old World rats now distributed worldwide; distinguished from the Cricetidae by typically lacking cheek pouches"