Abstract: A kit for the assembly of an animal climbing structure includes a pair of base members having rod-like support elements projecting upwardly therefrom. A column member is adapted to be supported by one end thereof on one of the base members and has blind bores in such end adapted to accommodate therein the rod-like support elements of the base member. The opposed end of the column member has at least one blind bore therein. An elongated beam member covered with a carpet material has at least one rod-like support element in a face which is cooperable with a corresponding blind bore in the opposed end of the column member. The beam member also is provided with blind bores adjacent its other end cooperable with the rod-like support elements of the other base member.