Hello...We have a problem that seems unusual to me and I wanted to get some advice on the best way to correct this. This happens usually when my wife walks our dos - a 7 month old Australian Shepard. He will be walking fine but after a while he just becomes hard for her to control - jumping at her, spinning, and running in circles. It takes her quite a while before she can get him settled down. Then he will again walk okay. He usually walk very calmly with me, and I have only experienced this behavior one time, but I was able to get him under control relatively easily, and then he walked perfectly fine with me. I guess I was wondering if anyone had any ideas why he behaves in this manner, and some instructions that my wife could use to get control of him in these instances. We generally like to get him at lease a couple of walks in a day, with one at lease on long walk over 45 minute usually. Any help anyone can provide would be appreciated. Thank You!