I thought I was viewing a strange video of a cat swimming, when a friend of mine stopped by and she said '"I trained my cat to swim a long time ago." Wanting to know more I said,"And how did you do that?" She said she started out by rolling a marble in the bathtub. The cat was naturally interested. She kept doing this adding a little water each time until she finally put in floating objects and the cat learned to swim. I wondered why anyone would do this and she said this was before I had children and had a lot of time on my hands. Ok. I knew there were a lot of strange people around, but I didn't have to look very far today.