I have a few cats who do that (swimming thing) when they are drinking water. They rub their feet on the floor while drinking, almost like they are swimming in the water. I also have a cat who tries to cover the food, then she eats it. Yea, that's real strange. Think she's a little backward. HA!
My cat does this! It is the strangest thing. He paws the floor around his food bowl like he's in the kitty litter or something. He's so weird! :lol: But yes, I've heard he's trying to bury his food even though he doesn't even have his foot in the bowl.