Sadie is ALWAYS panting. She lays in the shade a lot, but she is still relatively young, at 3 years old. I plan on shearing her sometime soon, just haven't gotten around to it yet. I got her in December, and she would still pant on the warmer days of winter. The times when she mostly pants is when her Buddy gets far from her, and she is calling for her to come over, when I herd them back in the pen after grazing, when she plays/fights, and sometimes, I think she does it for no reason... I have another doe that I have had since birth, and she has panted since she was a baby, but never this much, only when she is playing/fighting on a hot day. It is supposed to rain all week, so I don't think I will be able to get her sheared, but as soon as I can, I will, because she has a pretty thick coat. She is having a bit of a hard time shedding it because I bought her copper deficient, and I am slowly trying to get her up. But I do think she will appreciate a good clipping.