My husband, Steve, and I raise horses. They are majestic animals but incredibly fragile and thin-skinned. The most frustrating injury a horse can get is a cut on its lower leg where precious little muscle or fat lies between the skin and bone. The skin pulls apart, and it's virtually impossible to suture. On top of that, the healing process is deceptive.
Healing appears rapid.
You can almost watch fresh pink tissue forming. But the new tissue keeps growing, pink, ugly and lumpy, rising far above the healthy tissue around it. Proud flesh is false healing. It becomes increasingly ugly when it's allowed to grow unchecked. At its worst it inhibits the horse's movement until the animal becomes lame.