Specialized vascular pattern makes dog paws resistant to cold

01/13/2012 | PhysOrg.com

Using scanning electron microscopy, Japanese researchers have discovered that the paws of dogs have an elaborate system of venules that act as a counter-current heat exchange system, keeping their paws from freezing on ice, similar to systems found in other arctic animals. This mechanism may not be as efficient in domestic dogs that spend less time outdoors.

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