Imagine a scenario in which you are out in the wilderness, say, in a national park, using a horse to carry stuff because there are no roads. And the horse dies. Well, you have to continue on foot, but there's a horse carcass in a national park now, with tourists hiking by occasionally. If you leave the horse there, it will attract bears to the hiking trail. What do you do about it?
That very scenario comes with instructions from United States Department of Agriculture Forest Service. They recommend explosives. A guideline shows how many pounds of explosives to set underneath each body part. If it's not possible to set them underneath the animal, you can put them on top, but you'll need an entire 55-pound box of explosives. They also recommend removing the horse's shoes before detonation. The goal is "obliteration" of the carcass, but under certain circumstances, "dispersal" of body parts is acceptable. -via Metafilter
See also: The Exploding Whale.
Why put the idea out there knowing animal cruelty exists?