My husband and I went a squadron event at a lake and we took Doppler. I didn't think he knew how to swim so we kept him in the shallow part of the lake. But he was beside my husband and he thought Doppler was still walking until his paw swished over the top of his foot. So my boy can swim! I was kind of surprised. But we got him a lifejacket for when we go out on a lake where it's really deep. My family made fun of me for getting it but it makes me feel better. He look quite dapper in his lifejacket. He doesn't seem to mind it either! We still don't know if Virga can swim. Since she's only four months old, we've held off on finding out until she's older.