So for the past 2 months we have moved into a big house. My dog is loosing weight on a new food, and eating only twice a day, he used to over eat (my fault, I cant help it but now I am more stern on his intake) He is a pit bull mix Almost 3 years old, Ive had him since he was 4 months old Lost 15 pounds Living with a a guy in the house now (it used to only be my mother my sister and I) He Gets along great with my mothers boyfriend but, sometimes he gets snappy when he is working on repairs with tools like screw drivers, little things Lately, he has been loosing weight, and has more energy. We have a bigger house that is clean and he is on heartworm medicine and "Solid Gold" dog food. He is doing well with it. Lately he has been acting aggressive towards sounds outside and unknown people. He used to never bark at cars or buses and now he lunges at them He was fine at first in the house, and lately for the past 2 weeks he has been acting this way. I dont get it! http://i56.tinypic.com/348oo3s.jpg Here is a picture of his foot, my boyfriend thinks it could be a splinter from the stairs that has grown over. He doesn't get mad when I touch it, he just licks it if he remembers that its there The vets that can deal with him are an hour away, and if it gets serious tomorrow we will take him. But we just noticed it was there today, and I would have for sure seen it if it was there yesterday. Why is my dog acting so aggressive and on edge? He is on a schedule for feeding and is walked and played with daily? No, I needed him to loose weight. He was 120 pounds, and they wanted him to be shy of 100.