I noticed my heifer licking her teat the pass 2 days. I usually fuss with them (touch) to get her used to the idea that someday I'm going ot milk her. I noticed today a blister (cyst?) on one teat. I'll buy bag balm to put on it. I don't know what could have caused it. Does this sound like something any of you have seen? Any recommendations for taking care of it or what to look for? As usual, THANK YOU!!!!