haha my cats are taunted by squirrels too. i live in a basement apartment so my windows are flush with the ground. there's no sill in my windows, and my cats were literally climbing and hanging from the frame trying to watch the squirrels. i had to fung shuey my furniture so they had a way to sit comfortably and watch!
this summer, i had all the windows open so the cats could perch in the actual window (the windows all have screens). this one crazy squirrel was just sitting by the screen, much like in that first post's photo. all 3 cats tried to pile in the window, and they were chittering like crazy. woody couldn't resist, she poked at the screen and hit the squirrel with it. the squirrel went bonkers and lept onto the screen and did laps around the frame, and all 3 cats were startled by his sudden outburst and fell out of the window into a pile of laundry! i laughed SO hard :lol: their tails were all puffed up and their eyes as wide as saucers. the squirrel wins every time...