My friend's neighbours'
owner cat doesn't feel that it's being fed sufficiently. So it wanders round to his for dinner. But this isn't acceptable, as it beats his cat up - and nicks it's food of course.
It's a warm Summer's evening, but the windows and doors are all closed, to avoid incoming feline menace. Except one of those tiny little transom windows you get at the top of double glazing. And that was only open a bit.
I heard the bang as the cat missed the first time, so saw it do this. It leapt from the ground, from a standing start to a height of just shy of 2m. Quite high ceilings in this house, so I'd guess the window was my head height, 6'. It had one front paw outstretched, and ran this up under the open pane of the window, and hooked it over the bottom of the window frame. Then dragged itself up by one paw, using its nose to lever the window open and sort of pour itself through the gap and onto the windowsill inside. A very impressive feat of acrobatics.
It then wandered off nonchalantly to the kitchen for a quick bite to eat.
Devil icon, because we're talking about cats here.