Dear Shadow, Col and Charlie,
Daddy is recovering your cat tree with new carpet. I'm very sorry that you apparently have nowhere else in the house to hang out (could I interest you in the empty lower shelves in the entertainment center or the currently empty beds? How about the laundry hampers?) but taking out your ire out on the dogs isn't helping anyone. Take the bad attitudes to yourself or make use of the doggy door into the fenced yard, you mopey creatures. He says it will be done today, you'll get your hangout back soon.
Oh and Shadow, I don't mind you hanging out by my computer, but get your little pink tongue out of my dinner bowl. Mine!
Signed, the less than sympathetic, non-sharing human.