The calf most likely has a damaged nerve. It can be damaged from the birth process as it comes through the pelvis or it can be one of those very infrequent development issues. Either way it might but probably won't heal and become normal. But it doesn't hurt the calf.Had a cow calf and it has one ear droop. Someone mentioned it could be mycoplasma. Can they be born with it? Seems to act fine. Should I treat? 2 weeks old now. View attachment 16235