Our last dog was GSP. We rescued her from shelter after her owner passed away and she and several others were taken to shelter. She was 2 years old when we got her. She was very trainable and a wonderful addition to our family! Our kids were small at the time and she was very good with them as well as our 2 cats we had at the time. Great guard dog. Our meter reader hated her, but she was very friendly with those that she knew or strangers we introduced her too. My husband ran with her everyday and she was a great camping and hiking buddy. Energy level was moderate. She developed arthritis as she got older but other than that, a happy dog!