When at the piggery , all sows were on a tag feeder system, enter feeder, computer reads the sows tag and dispenses food. Some of the older sows would remove the gilts tags in order to gain extra rations, then secrete the tag in her mouth until next feed time. They have lots of time to figure out things and do work as a team.
The teaser boar we had that could understand buildings and pen numbers is for another day.