I'm not familiar with this behavior pertaining to a yorkie. But I used to have a maltese that licked her feet obsessively. At first it was because of an allergy problem, then it just became a habit for her. We used bitter apple on her feet after a little while to disuade her from doing it and she stopped.
Also you may want to check the paws for those little fox tails from the grass. They can get in between the toes and work their way into the skin. |