
Dogs can fetch and roll over in the snow without fear of frostbite, thanks to the arrangement of blood vessels in their paws. Credit: Dan Bennett When playful pups skid across an icy pond or romp in a snowdrift, their paws plunge into frosty places. If people go barehanded and barefooted in such cold places, their skin may freeze in a painful condition called frostbite. Dogs frolic without fear of frostbite, and scientists from Japan say they’v…