I wouldn't worry about taking a small deer. Depending on where you are, the DNR encourages hunters to take any kind of deer just to get the population down. Also, depending on where you live, the mortality rate for fawnscan bepretty high in the winter. I took a button buck early this year. I couldn't tell that it was a buck, I thought it was a doe fawn. But anyway, in my area, you have to shoot an antlerless deer before you can get a buck tag, and anything with antlers of less that 3" qualifies.