I have several times introduced a baby pig to an older pig and have seen them watch the older pig intently to see how to use the ramp or the water bottle, with the older pig continually looking over to see if baby pig was paying attention and figuring it out. I've actually had a long line of potty trained pigs because my original boss pig, Linney, was super courteous about going back into the cage to pee and poop. Her companion followed her lead, and then the next baby pig learned from her, and so on down the line. It has saved me a lot of carpet cleaning over the years! LOL!