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The following images have been used:
http://www.arctic.noaa.gov/gallery_wolf.html
http://www.uswolfrefuge.org/MexicanWolf/Images/Mexicanwolf-03.jpg
http://bigstonehead.net/wp-content/uploads/2006/12/eastern_timber_wolf.jpg
http://www.wolvesgalaxy.de/images/wolfart17_480.jpg
http://www.vitejte.cz/velke/2152_01_21.jpg
http://www.0markus.de/Page/robert/woelfe/Bilder/HerkunftArt/u_tundra_wolf.jpg
http://bigstonehead.net/wp-content/uploads/2007/01/wolf.jpg
http://www.lalobera.org/index_archivos/revista_archivos/articulo_archivos/Lupo.jpg
http://www.ualberta.ca/~jzgurski/danishwolf.jpg
http://eelink.net/EndSpp.old.bak/redwolf.GIF
http://www.grida.no/aeo/images/img2b8s.jpg
