go MENTAL if another poor sod (cat) makes the mistake of sitting on our windowsil? freaks me out, happened a few times now, our normally chilled out affectioniate cat that looks like she couldn't force her way out of a paper bag, goes BALLISTIC and leaps at the (closed) window to ward off any cats that sit there. she has only been with us for just over 3 weeks and was rescued from living rough in an east london builders yard so i guess is protecting her patch but i didn't think that cats were that mental. you wouldn't want to mess with her :)