Yes...scared me to death-right after Ritz had her spay surgery, she attempted to jump up to the top of her living room cat tree, which is sitting on top of a very heavy and large cement crock. She was stiff and sore and just didn't quite make it, pulling the whole thing down on top of her....almost..., I had stepped out of the room for just a minute and got back in just in time to catch the toppling tree!~

I am now very careful to make sure these are well anchored somehow...when I shop for new ones, I test them for "teeterability"....could an almost 15lb kitty knock this over? I have a new tree that had to be "shored up" on the sides - the first thing Ritz did was knock it over...hmmm..no wonder it was on sale so cheap!!! (notice the computer bag "holding itup"