Australian Shepherd Got Aggressive As Person Was Leaving
A friend of ours visited while I was playing with our Australian Shepherd in the back yard. She is a dog person. She had never seen our Aussie. Our Aussie checked her out when she came to the yard but was not aggressive towards her. I continued to play with the dog while my wife and I visited with our friend.
After about 5 minutes, our friend was leaving our yard. Almost as soon as she turned her back to our dog, he dropped his ball and raced approximately 30 feet from his location and leaps into the air to about her shoulder height and snapped at her. She got a scratch from his paw on her arm, but if he did actually bite her, it did not show.
Our friend just held still until I could grab his collar. After this initial lunge he did not attempt to snap at her again. I am mortified by this. He has been around people in our house and yard before, some he never does accept (keeps his distance), others he accepts over time, but has never done something like this.
Has anyone experienced this before?