I did that ages ago, came home and my husky tuxedo was laying in the middle of the downed tree, it was a birthday surprise! She was very sweet and gentle, but curious I guess.I tied it to the ceiling after that. Strange at the vet they had a warning on her cage for vicious! Shocking. Felix seems to enjoy this tree more than I am, I hate to scream and squirt him, but just gets a bit carried away in there. His job seems to be to knock all the crappy ornaments off. It's in a corner, I think that has kept it upright as he jumps into it! See how it goes.