The 'dragon lizard' whirls about and goes into a defensive stance, not having expected the other person to arrive. The four arms rise a little as well, tail lashing once. It looks like this one was expecting some sort of attack and openly glares at Jacob, mouth open with curled lip to bare teeth slightly.
Slowly, however, the creature relaxes when it becomes clear that there's no hostilities happening. He remains in the crouch for the moment, however. He lets the others speak if they are inclined to do such.