Why does the military use and abuse animals in their training?

The military is involved with nasty people. In fact the military deals with horrible people. The military has animals walk through a mine field. The dogs walk through the mine field. It blows up the dog. The military prefers to have the bomb blow up the dog instead of a human being. They train animals how to walk through mine fields so when they come to the real thing, the animal will know how to walk through the mine field. Unlike the enemy, the American Military prefers to blowing up animals to people.