IT looks like bloat. When there is rapid increase in the temps during the day, cows can get bloated. I had 3 cows that died that way in one day. I checked on them in the morning and they were fine. I went back 6 hours later and they were bloated. Due to the heat, their stomachs produce too much gas and the expanded stomachs put pressure on the lungs and they can't breath. The animals can be saved if someone is there when it goes down. A Vet can insert a valve that allows the gasses to escape through the side of the animal.

IT looks like bloat. When there is rapid increase in the temps during the day, cows can get bloated. I had 3 cows that died that way in one day. I checked on them in the morning and they were fine. I went back 6 hour later and they were bloated. Due to the heat, their stomachs produce too much gas and the expanded stomachs put pressure on the lungs and they can't breath. The animals can be saved if someone is there when it goes down. A Vet can insert a valve that allows the gasses to escape through the side of the animal.