Allright, the topic's title is a bit weird...hah. 
So what was I thinking about? It's quite simple: We should be able to equip some specific tamed/charmed beasts with armors and/or weapons etc. A picture is worth a thousand words, so...[trolls from Peter Jackson's LotR movies] ->
[Cave] Troll without any armors/weapons

Troll [Olog-hai] with armors & weapon equipped:
