Just invited a Bengal kitten into my home. Have created multiple "safe places" that he's mostly ignored. When he crawled into an uninviting file cabinet - from below, don't ask me how - knew I needed to find this sensitive, predatory animal a safe haven. I'm busy studying Agile's structures - cause nothing "normal" seems to suit this very agile creature - when I discovered the cave. Thought this was a good place to start. I noticed the heat generating property of the product right away. I live outside and love natural wool. My Bengal kitten escaped outside today while chasing a chipmunk - which is a major kitten's life event - and he had the luxury of retreating to this heat generating cave tonight. We both will sleep better because of it....