I moved my 6 month old panther into a 2*2*4 about a week ago and he seems to absolutely love it. He had been rubbing his nose on the cage (a sign that he is outgrowing his cage), so before I put him in it I also put sheets of that green plastic coated garden fence on the inside of the screen mesh. This gives him something to actually hold onto on the side instead of getting his claws stuck in the screen.