Mostly, he's a humanitarian, or whatever the equivalent of that is to a man who crosses paths with all manner of creatures. He cannot leave an injured being behind without at least attempting to assist. That is, as long as his assistance doesn't violate the prime directive... in most cases. Nevertheless, his concern is genuine.
"Interesting." And his curiosity piqued. He had never seen a creature who bled when they were sleep deprived, which is his take away from the simple explanation given to him. "Will you not bleed out?"