Author 'Grognon' (Original: Guylaine) : My opinion is that the original photo is exposed for the snow and not for the squirrel.
I am content to enhance the overall brightness so that the squirrel is the main subject appears to be exposed correctly.
This also has the advantage (in my opinion) to restore the color of the snow must be white.
It loses a bit of detail in the texture of the snow but in my opinion it is acceptable and focuses more attention on the squirrel.
This editing is surely open to criticism and other approaches may be to try as that of Charly, who had proposed not to touch the dark areas. Lien : Http://image.noelshack.com/fichiers/2014/48/1416933073-panotags-villette.jpg