Last summer my goats had really bad worms....they were treated and I was told that the coughing, and runny noses were probably caused by lung worms and would go away after the worming treatment. I now treat my goats every month with a different wormer to keep the problem for coming back, I have just recently treated them. My goats are no longer sick and they are eating fine. They run around with bright eyes and their tails are standing up. But ever since the worm problem, sometimes after playing they will cough and sneeze and thick white mucus will come out of their noses. It usually only happens after they are being really active...but sometimes they will just sneeze. It is only happening in my younger goats, my older ones act fine and do not have the runny nose. They are all on the same medicince...same feed...same housing. I do show 4 of my younger goats so I thought the stress they might be under from showing gave them a cold. But how long does a normal cold last? I was told that they didn't need treatment until they started showing signs of distress like going off feed or not acting their happy selves. When should I treat them though....and what should I treat them with? Could this be something like an allergy instead of a cold? Thanks for the help.