It is with a heavy heart that I post this thread in the hopes that you folks may have had a similar experience. Two weeks ago I let my fawns into a pen with four foot high rye grass. Two hours later I had a fawn down with massive bloat. He was symmetrically tight as a drum. After tubing, Bloat Release and needle decompression he died. At that point we moved the deer and cut all the rye grass down. This morning two deer were found down with bloat. The first was dead. She was so bloated that she had blown out her rectum and ruptured her abdominal wall with protruding intestines. The second fawn was again symmetrically bloated and tight. Same routine of tubing, Bloat Release and needle decompression produced no obvious results. We were able to get small pockets of gas out but nothing that made any great difference. He died within two hours. My pen has grass, hosta, ornamental grass, very short rye grass and normal lawn grass. All twenty fawns are still on bottles. They are also hitting on sweet feed and some browse consisting of maple leaves. I am at a loss as to what could cause two deer to go down at the same time. If anyone has any thoughts I would greatly appreciate it. I also have pictures that are graphic but if you think they would help determine the cause I would be glad to post them. Thank you!