Hmm, I don't think Blue is scared of anything. I remember when he went to his new home with me, he trembled whenever i or anyone picked him. He was not comfortable being picked up but now, he's comfortable being picked up. I guess I expose him to the surroundings that he is used to anything. I am sure he has a fear of something but haven't discovered it yet. I'll see how he reacts to people wearing costumes during the Halloween night...