Tonight we had play practice at church. When we got home I caught Peanut in the act of chewing on the side of their ramp, made of coroplast. Sure enough when she moved there was a bite size chunk out of the other side of the ramp too. Surely you guys would not suggest putting something in the cage that would be bad for them if they chewed on it, so as I said this might be a stupid question but I figured it was worth asking. The two baby girls are not big 'chewers' so I'd not encountered this before. They have plenty of hay, pellets and veggies in the cage at all times so its not as if they are hungry, the only thing I can think of is possible boredom but I haven't figured out anything for them to really do besides lap/floor time other than getting some PVC pipe for tunnels but then that wouldn't give them alot of activity since I've heard alot of pigs just sleep in theirs LOL