Hey all...new here.....looks like a great site........I have a question maybe you can help me with....about a month ago I noticed one of our cows had a sack full of fluid under the tail above the rectum about the size of a large apple.........the next day it ruptured and i didn't worry about it......but it came back and now I have another cow with the same problem...I've asked around but nobody has a clue what it is.......any ideas?