True story. We have a 12 year old golden retriever. When she was around 2 our daughter was 11. We were vacationing on a lake in NH near the ME line. It was a hot day and she went out on the lake on a big tire raft. The dog decided she was out too far and swam to her, put the rope tow line her mouth, and swam her to shore. I have a photo of it somewhere...an amazing moment!