Well I've recently built a Cavy Cage for my piggies and it has a second floor. But my question is my piggies wont go up the ramp!!?! Is this something they need to get used to or do some piggies just not go up? I also thought theyd be running around popcorning and be all happy and they just seem to be laying in the corner inbetween eating. they are good eaters. Are they just lazy?