my roxie does this and its absolutley disgusting cause then she wants to try and get in my lap, but the last time i seen her do it is we went hunting and were walking around she bolted ahead and then i could not see her through the grass i finally got to were she was and she was just wallering in and tring to cover every inch of her body it looked like, i would really like to know why they do this and what you can do to stop it.