- Massive all - in - one cat complex - Keep your cats from scratching your furniture by giving them some of their own - Physically and mentally challenge your feline friend - Sturdy, tested to hold 62 lbs per hammock, and 85 lbs
per wooden piece - Beautiful, large, and sleek design The Thunderdome is one of our largest complexes; it includes a 4 - ft tall Vertical Sisal Pole, two Floating Sisal Posts and six hammock lounging areas.