I have noticed Caiza licking his feet alot and also noticed discoloration between his toes from the silyva. We walk everyday and have had some crazy weather and lots of ice which means lots of sand and salt mix on the roads and sidewalks. I have been cleaning his feet off whenever we come in from outside to get rid of anything on his pads. He's not constantly licking them (guess I exadurated ) but I have never noticed this until the stormy weather arrived and we had to start using the sand/salt mix to melt the ice. We have also been walking alot on snow/ice which is turning slushy when we go hiking in the woods, could that also be bothering his feet? I have tried booties before but they just seemed useless and fell off after a few minutes. Any suggestions