I must just be lucky because our cats have pretty much left the tree alone every year. The worst that happened was that they took an entire string of garland off of the tree. Well, I think Trent took it off so Ophelia could play with it. Wasn't that nice of him?
When we tried to give them their presents last year, some catnip mice, they didn't get it. Now Trent will shred every piece of tissue paper in the entire house given half a chance, but the one time I *give* him tissue paper to shred to get his prezzie? Nope.
They did like the mice once they were unwrapped for them.