My hubby made the stairs with a 3by4 I think.. took him a while to make it.. looked really nice but the older piggie couldn't go up or down she was to big to fit so I had to take them out and put up a plain ramp for now
That's a really nice cage. I plan on making one similar... I thought the storebought cage I had was really big and roomy but compared to these cages it's just so small..