This morning, younger cat, who is now formally out of kitten-hood, topped a protracted and highly athletic pursuit of a fly with a leap from the bathroom windowsill to the top of the shower doors. That's almost 6 feet, from a mostly sideways stance on the narrow sill & at a slight upward angle, to a 2.5 inch wide landing platform. She not only nailed the landing, I'm pretty sure she did a 180o twist in mid-air. Only pretty sure, because all I saw was the flying blur immediately prior to looking up into a pair of huge golden eyes.
I'm reasonably sure that, in her mind, it was only the waterfall which deterred the ferocious predator from instantly pouncing on the helpless prey!