Ok. I know many dogs eat grass from time to time because some like it and others because they have an upset stomach. I think I need to have a DNA test done on Harlea because I think she is part billygoat. She doesn't do it all the time, but when it is getting close to time for the weekly yard work she goes in to overdrive and starts grazing various patches of the taller grass around the yard like it is evil or something. Is this normal or should I be worried?