I lost my blind horse!

After searching all over the pasture and along the roadsides, I decided to look in the swamp. He has been in there before. I drove my tractor in since I wasn't too fond of snakes and almost got stuck. Thank goodness for a bucket. I used it to walk pull me out of the mire. Hitting more solid ground I went in deeper and soon found him. How the heck did he find that patch of grass? I called him and he followed me back home. Hopefully, after a good feeding and wash, he'll stay put around the barn.