My dog is a small mixed dog i got from my local shelter about six months ago. She is very aggressive towards all other dogs and im at a loss as for what to do about it. since i got her from the shelter im not sure where this aggression comes from and living in such a small town i have yet to find any trainers that i can call to help me with her. i take her to the park everyday hoping that she will eventually get used to the other dogs there but there seems to be no change. she has no other problems and is very good with other people and small children. it seems to just be a territorial thing with the other dogs maybe because she had to compete with other dogs at the shelter? im not sure. any suggestions would be greatly appreciated!