I think they should. Not like narmed but with a sort of armor to protect from bullets and grenades... like a modified flack jacket. Hey could run at an enemy getting shot but being ok then they could bite em and kill them. The dogs or tigers or whatever animal used would have a very very low chance of dying if I was making the armor because I would take every percaution to make them almost kill-proof this way people don't dieand it is very unlikely for the dogs to die... but they should be used properly like against infantry, not tanks and ships and stuff like that. It would be a very good idea and dogs ect. Wouldn't just sit around lving a normal life... plus they'd be well-fed and maintained with a good place to sleep. If you ask me that would be a great life if I were a dog in that position.

If we could have special training in this area, it would be awesome to have different kinds of animals to use in fights. Maybe have soldiers on armored horses.

I don't think the question is "Should they be used to fight in the army" but rather would they be effective combatants, and in nearly all cases the answer is no. The lethality of bombs and bullets, requires a bit of intelligence to avoid, something most animals are not known for. Historically animals have been used in warfare, everything from horses, to dogs, to elephants. As technology progresses the usefulness of these animals diminishes, so it is no longer worthwhile to spend time and money for something that isn't all that effective. Think opportunity cost. There are a few rare exception. Bomb-sniffing rats is the only modern example of animals in the military that comes to mind. If using animals in combat gave us any advantage, we'd already be doing it.

Try to think along the terms of cheaper. How about 9,700$ cheaper than a jeep with gunner.

yes I think dogs are very good at bomb finding. But to day technology we don't even need people in the front line anymore. We can be sending little bullet proof robots with guns. controled by people that are like just sitting safe back at base.