In which more inexplicable cat behavior is observed

It must be a cat thing. Maybe mine really are normal; I can't decide.

This morning I watched Koshka drink water. She's just as weird as Moonshadow and Alexander but different. She puts both front paws on the water dish (we have big heavy ceramic ones, or there'd be a lot more messes) and drinks out of the far side of the dish. Occasionally, she touches the water's surface with her right paw while she's drinking. After she got done, I checked her paw to see how wet it was. She must be just barely touching the surface, because only the very tip of her paw was wet.

Why do they do that?