is this for a rabbit?

I would say your best options are to leave it in a room without the cat and never lock it away in that cage, the rspca reccomend at least 5 foot x 2 foot for 1 small rabbit. If you cant give it a whole room then these pens are great Outdoor Pen with Fenced Covering: Great Deals on Small Animal Pens at zooplus and a much better price than cages, if you needed to lino is only another £10 - £20 depending where you go.