This exact thing happened to my brother and me when we were kids. Well, not the railroad bureaucracy part, and not the strained Irish-Scottish relations, and not the newborns dancing, but other than that this cartoon was a certain period of our childhood. We got one guinea pig that turned out to be pregnant, my dad couldn’t make new cages fast enough, and eventually we had 18 guinea pigs. Our favorite one was named Panty Hoe. That’s about all I remember about the guinea pigs.