This picture is released under the Creative Commons Attribution-ShareAlike 3.0
Unported license. The author is Niels Serup, and it's based on the pictures
found at <http://commons.wikimedia.org/wiki/File:Akiba_denkigai.jpg> and at
<http://commons.wikimedia.org/wiki/File:Squirrel_in_Seurasaari_autumn.JPG>,
both also released under CC BY-SA 3.0.
See also [Akiba_squirrel.xcf] and [ssq.png].