Jumping and sprinting on a tree creates lateral force, and tall narrow-based models can tip, more so with heavy cats or several using it at once.
Check three things when buying: base area and ballast, metal-reinforced post joints, and overall wobble; more high platforms demand more stability.
Anchor trees over about one and a half meters to the wall with anti-tip straps, and site them away from glass decor and window fall paths.
Retire trees with shedding sisal or loose platforms for repair, and give arthritic seniors stepped low-level towers instead of big leaps.
