I need help diagnosing recent sick ewe. In a corral full of plump WF ewes, I had one that has lost considerable weight the past 3 weeks. Her appetite is fine, but she is obviously sick- yellow mucus discharge from nose, weak, and most recently, blood tinged watery discharge from her vulva. (but no sign of anemia when checking eyelids) Back legs appear very weak and one hock is enlarged. (Could be due to dog bite- had discovered 2 dogs in their pen last month, but hadn't noticed that she got bit at the time.) No aborted fetuses at this time. Wants to eat, but doesn't appear to want any water when offered. Any ideas? Thanks in advance for your help.