Despite what the pet store people tell you that cage is not big enough for two guineas, you need to be looking at something with an area of at least 10 square feet, ideally 12 SQ FT minimum, they need lots of space to explore, they are very inquisitive little animals and love running around and playing with toys, split levels would be even better as they like going up and down ramps to different areas of their home, beds upstairs food and play area downstairs, ours go outside almost every day when warm enough in a 20 SQ FT run on the grass, amazing little lawn mowers, they love the dandylions that are growing in our lawn, just make sure you don't add anything to your grass, weed killer etc and make sure they have plenty of water and some shaded area to shelter from hot sun and they can stay out there all day