As some of you know, I have moved into a new house. I took reggin with me, and left my chihuahua/min pin at my moms house (temporarily). Today I visited my mom, with Reggin. As soon as I walked into the house, my chihuahua charged and attacked Reggin. NOT PLAY. I'm talking teeth barred, snapping at his face and eyes, growling, jumping off the ground with mouth open, etc. As that went on, Reggin just stands there, very still, with a weird look in his eye. I immediately grab her off of him and put her in another room. Right now I'm afraid to let her out! When Reggin approaches the door, she growls at him. She does not know that he could easily kill her if he wanted to. If she bit him in the right place, and hurt him, all hell would break loose. WHATS GOING ON HERE?? What do I do?? Please help.