I adopted my little 14 pound chihuahua mix from a shelter about 8 months ago.. when we first got him he was extremely scared he sat in the corner of my kitchen for 3 days shaking and crying. After a lot of patience and told he finally came around. Carter is now what I can extremely emotionally attached to me. He is also extremely aggressive. I have 4 kids. Sometimes when Carter is in a bad mood and one of my kids walks by him he growls and lunges at them in attack mode. He has done this to everyone in the house including me. He is untrained in every way except he is potty trained. He has bit houseguests before just for standing up after sitting on my couch. I have tried almost EVERYTHING and nothing is working.. I LOVE him to death but he is a safety hazard to my family