Thinking out loud here, because the other day, my party's Druid tried to have her bear scare some critter, and they were slapped with a -4 penalty for not being able to speak a language. Needless to say, that went poorer than expected.
But it does raise to me the question of why the penalty exists in the first place. A raging level 1 bear is actually less scary than an untrained level -1 gnome in their pajamas.
It's clearly not intended to be a hindrance to PCs. Intimidating Glare only requires Trained in order to intimidate any non immune critter at no penalty. It really only affects monsters without language, really, since they don't have feats. It only penalizes animal companions and monsters that just have an Intimidate modifier in their stat blocks, and I'm just wondering... why? Does it make the game more fun? Is there a rules trick or exploit that occurs if things without a language can intimidate effectively? I'm genuinely curious.
Thank you!