Anyone have any advice for me? My 28yr old mare, Skye, is really suffering with her 'heaves' in this heat. (96* with a heat index of 111*) It is supposed to be up to 115 tomorrow. She has a box fan in her stall, but I don't keep her shut in because it is still sweltering in the barn. I have hosed her down a few times - this last time when I went to check on her she had green snot in one nostril (sorry), both nostrils were blood red and she was breathing so hard her head was bobbing. It took over 20 minutes to get her cooled down running a hose on her whole body, then chest, neck and inner thighs. She is on Dex pills every other day, and I went yesterday to the vet adn picked up some "Tri-Hist"... of course it hasn't made a difference after only 2 doses. She has tons of shade, some of it very deep shade (shaded all day long) - but it is just too hot and humid for an old horse with respiratory problems.