Not sure, I never managed to get a cine...
Either Rogue approached alone, got noticed, and attacked (fought, quicksaved, and reloaded to try with "Speak Animals" character)
I think when I approached with the "Speaker" I was with my group, and couldn't get a talk option.
I ended up just chalking it up to pissed off animal with spear bits stuck in him, and am now wondering if I still have that save...