Arlo was climbing the walls long before we put up the first shelf. Arlo means "guardian", and he was given that name because he always seemed to be looking out for his then little brother, Boris. He gravitates towards high places where he can monitor anything and everything that transpires in his environment.

Annabelle was the biggest surprise. She seemed perfectly content and very happy prior to the catscape, but as the shelves went up, she was always the first one to try them out. She's also the most enthusiastic climber and will even climb carpeted ramps upside-down. People often comment on how chubby she seems, but when she's in action, it suddenly becomes apparent that she's mostly muscle, grateful to have opportunities to be utilized.