I haev an 8 motnhs odl Aussie mix named Chewy. Chewy also is agressive. Waht we do is reward his good behavior or the behavior we like. Like when he is laying by the couch and aloy someone to come over and talk to him he gets so many dog biscuits that I can't even count! Also, when peopel come into our house they have to ask chewy to sit and then give him a dog biscuit. Your dog may think he is belwo you and you need to assert that you are above him. Because I am above Chewy I cna not help him but the people who he beleaves are below him haev to work with him. I have svral friends who come over once a month to help out. What happnes is there are 4 of them. And they each come over 2 in one week to see Chewy. All tehy do during this half hour is have him do comands and then the next week diffrent people come and then at the end of the month my fasther has his tlc (group of 8 people) come over and they all do comands with Chewy for an hour to 2 hours. I try to switch it around as my whole Church has offered to help us help Chewy. This way your dog will learn all peole are above him, not just certain people. I'm ot going ot lie to you, it is going ot take a long itme and alot of paitince. I have been working with Chewy for almost 2 or more months and have only see slight changes in his behavior. Contact a behviorist or trainer.

Most importnatly DON'T GIVE UP. If you ever need to talk please Pm me I am more then willing to help. I know alot of tiems I feel like giving up on Chewy and wish I had some one to turn to who would just say look how far you've come you can't give up now and if thats what you need then Pm me. I am always willing to listen.