Welcome to the site! Your pigs are so adorable! I love the design of your cage, but I think it's too small for 3 pigs. From the picture, it looks like a 3x3 with a corner cut off. A 3x3 (even without the cut corners) is too small for 3 males. Once they reach their teenage state, they may start to fight. Males are very territorial, it would be nice if you could expand the main level of their cage.