All dogs love to sniff, but have you ever noticed now much more intense they become on a cold frosty morning? Temperature and environment have a huge influence on the Scent Picure. Think back to physics 101, when molecules are heated they spread out and move quicker. When they are cooled, they come together and move much more slowly. Therefore the smells your dogs are detecting on a cold day are much more concentrated and intense. Watch your dog next time you are out in the snow and see if they have their nose on the ground more than usual.