8 Month Old Aussie Getting Aggressive With Other Dogs

by Tony
(Rock Hill, SC)

Hello, my name is Tony and I live in Rock Hill, SC. I have a 8 month old Aussie girl. I got her when she was approximately 4 months old. She lives in a great home and is played with constantly. Fetch, Frisbee, swimming etc. Knows some basic commands and is very smart. My problem is she has become very aggressive to people outside our immediate family and refuses to go on a leash. She fought at first when I got her but accepted the leash and now she goes psycho when one is on. I have put on a leash and let her run with it loose but once it is in my hands she is a different dog. I have socialized her, taking her to pet stores and parks. Putting her in different situations but for some reason she has become very aggressive. She is not food aggressive and loves to play with our other dog but goes after other dogs. Male or females.

I am familiar with breeds that are protective having Dobermans and GSD through out my life.

Thank you for any advise.

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