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Cowboy, a six-year-old Australian Shepherd dog, stands in the grass, April 11, 2014. The curled lip is known as flehmen, by which dogs use their Jacobson's Organ inside their mouth to smell pheromones and other barely detectable scents. (Photo by Carmen K. Sisson/Cloudybright)
Copyright
2014 Carmen K. Sisson/Cloudybright
Image Size
2584x3264 / 24.2MB
Contained in galleries
Animals, Dogs, Australian Shepherd Dogs
Cowboy, a six-year-old Australian Shepherd dog, stands in the grass, April 11, 2014. The curled lip is known as flehmen, by which dogs use their Jacobson's Organ inside their mouth to smell pheromones and other barely detectable scents.  (Photo by Carmen K. Sisson/Cloudybright)