He has some larger cousins, one of them being a little bigger than Nibbler the house mouse.
Items recorded in winter but not in spring are house mouse, tree sparrow, and grasshopper.
Other prairie voles and white-footed mice were taken on later nights, as well as one Pennsylvania vole and one house mouse.
It occurs on both the brown and the black rats Mus norvegicus and M. rattus, on the house mouse and frequently on man.
Its general resemblance to the house mouse frequently leads to its being mistaken for that species.
The house mouse evidently is uncommon in rural environments in northwestern South Dakota.
He is never bigger than Nibbler the house mouse and often is much smaller.