hi I was given one of these cages and it didnt have a base with it so i bought a large metal pan that is used in a dog cage as a floor I set the cage on top of this the floor is pertected the ferret is safe if I have to cage her and as heavy as this cage ( at least the one I have is )I do not believe a ferret could tip it over I would think if you used anything that you could set the cage on and that item was cleanable and not chewable or edible as a bottom it would work for you . Its the little things in life that make me happy! [Posted in FML issue 4687]