Hello how may I help you? I got a question about apartments! i'm sorry, i only give out pet advice. I have a cat. How much space do i need in my apartment for her? a cat is very territorial. they usually want their own room for food/water, litter, and a cat tree. they will also want a screened window. Oh man that sounds like a lot of room! if they like you, they will let you in the room to replenish food/water and litter. Well there's a silver lining! they will also try to sleep with you, so you well need a bigger bed Maybe I'll just get a goldfish.Thanks! that is known as "cat food"