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Cowboy, a five-year-old red-tri Australian Shepherd, demonstrates the Aussie "smile." 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
2013 Carmen K. Sisson/Cloudybright
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4928x3264 / 46.1MB
http://carmensisson.photoshelter.com/about/
Contained in galleries
Animals, Dogs
Cowboy, a five-year-old red-tri Australian Shepherd, demonstrates the Aussie "smile." 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)