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are more details:

"There was not a foot that was not affected," Gretchen Jackson said. "He just would not lie down. He had not layed down for two days now. That can’t be good for him. He’s got to get the weight off of his feet. They were bringing him in and out of the sling, but his front feet were showing signs of laminitic changes and we just thought rather than put him through any more else. He had been good up to the beginning of this month, and then everything went.

"Dean wanted to think about the options, you know you can always go on," Gretchen Jackson continued. "But it’s when to get out that’s hard, and it was agreed upon to let him go."

The veterinarians and owners did all they could, but when the front feet start going bad, there's no hope at all.