He wasn't going to attack, yet. But not out of any concern about conserving energy--more that he doesn't know if this creature is part of the indigenous (or close enough) life here, if it was alone, and if he would bring down a whole herd of trouble if he did.

"You smell like daemons." Of course he wants to know why and of course, if the creature can't speak, he's not likely to get a solid answer. "Are you a daemon?" A kind he hadn't seen before, but what did he know? They liked to possess everything--humans, librarians, weapons...why not this?