I am wanting to get my piggies a bigger home now their are two of them and was thinking a 2 tier one will be best as i have my current hutch inside the run so they can come out whilst I'm at work and go back in when they get tired, so therefore i could put a two tier hutch in there but they still have more room. Only problem is my little baby piggie Lily is blind so dont know if she would be safe with a ladder/ramp? do you think i could put some wood along it so she cant fall off...I'm a bit stuck PLEASE HELP 98)