Gizmo is 7 1/2 weeks old, and into everything....lol....Including trying to take my oxygen off my nose at night when I'm sleeping. The vet suggested that since I am oxygen dependent, that I crate him at night or get him an indoor habitat. Where he could interact with me but still be kept away from my medical equipment. Any suggestions on sizes and what should be in them? I am wheelchair bound and Gizmo senses when he needs to get out of the way so that he doesn't get his tail caught....he loves to play!!!