As a US government publication, the original picture is in the public domain. The retouched version has been released into the public domain by its author.
This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: background color changed. The original can be viewed here: House mouse.jpg: . Modifications made by Ilmari Karonen.
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
Public domainPublic domainfalsefalse
This work is based on a work in the public domain. It has been digitally enhanced and/or modified. This derivative work has been (or is hereby) released into the public domain by its author, Ilmari Karonen. This applies worldwide.
In some countries this may not be legally possible; if so:
Ilmari Karonen grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.