We're not sure which cat did this, but the mesh/net curtains have been up for a very long time. However, in all the time they have been there Magic has very gently found the opening and then entered if she fancies a little look out of the window.
Red on the other hand has been here for four weeks now. Two weeks ago there appeared five little tears which look like the same size as his paw. This meant the curtain needed replaced but as we are planning to install blinds we just left it. Last night however when I got home the picture above was what the curtain now looks like.
As I said, I am not sure who did it but, I certainly reckon the little ginger 'rat-ball' is not only in the frame but sitting there holding a card with his prisoner number under his chin!