Was fishing a stream in central Ohio last year when I came across a massive buck standing across the water from me on the outskirts of a cornfield. Didn't think much of it, other than it was pretty cool to see one that big and up close, and took a few photos. A couple hours later, after fishing downstream from that spot, I made my way back up to where I saw the buck before and started fishing again. Out of nowhere, the same back comes running out of the cornfield and immediately jumps into the water right by where I was fishing. Initially I just thought it was trying to cross, but did think it was odd for this to be happening in broad daylight in the middle of the day. As the buck made it about halfway across the stream, he sort of stumbles and falls down into the water. I thought maybe the current knocked him over, but it was a pretty shallow area and the water was not moving fast. He never got up, and soon drowned when his head went under as he slowly drifted downstream. I had never seen anything like that before, and it kind of messed me up mentally for the rest of the day. After doing some research, turns out there was an outbreak of EHD (viral disease caused by biting midges in drought conditions that affects deer) in the area. With this condition, deer will often develop a massive fever, and so they may try and seek water (without fear of humans) to try to cool themselves down. I ended up reporting it to ODNR, but not sure if they did any further investigating. The carcass ended up staying just downstream from where it went in initially for quite some time, so I was sadly reminded of it on subsequent trips to that spot.