Estados Unidos,
2011
Galería (4)
Foto © National Geographic Wild
![Blue Collar Dogs - De la película](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/042/874/42874734_99e003.jpg)
Foto © National Geographic Wild
![Blue Collar Dogs - De la película](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/042/874/42874735_5214a2.jpg)
Foto © National Geographic Wild
![Blue Collar Dogs - De la película](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/042/874/42874736_73764f.jpg)
Foto © National Geographic Wild
![Blue Collar Dogs - De la película](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/042/874/42874737_76e98d.jpg)
Foto © National Geographic Wild
Foto © National Geographic Wild
Foto © National Geographic Wild
Foto © National Geographic Wild