Cow is limping on her right front foot/leg. I can't see anything wrong with it except that it is twisted out a little bit (the way they walk sometimes). She's not one I can get into a stall easily at all. She won't let me get too close. Took her water today, and she drank it; then, immediately got up and grazed, but I can tell it is hurting. Anything to look for? Any suggestions?