Our black cat is the reason cat trees only last a few months in our house. She'll haul ass up it then thrash on the highest spot. Eventually it'll fall off (with her on it), then she'll move to the next highest.
That's why when she demolishes the current one I'm just going to recreate it out of Oak.
I bought one of the really sturdy kind (weighs about 40kg / 88lb). Uprights are solid 100mm/4" rounds of pine, none of that hollow cardboard tube nonsense.
My XL-sized void loves to haul arse into the room and leap right from the ground to the top level (around 1.6m / 5'3" from the floor), which makes the thing rock side to side fairly precariously. He hasn't knocked it over yet, but some day I'm sure he'll come in too hot.
