Some time ago, Frank and I found the videos by "Professor Kaboom" on YouTube. He lives somewhere in Northern Germany (might be Hagen) and has lots of guinea-pigs and he posts a lot of cute videos. He speaks German, but just watching the little guinea-pigs is cute. In tis one, he had 19 baby-guinea-pigs. His male guinea-pig Moh managed tp jump over the barrier in the cage and got quite a few of the sows pregnant. He had fun and weeks later, there were lots of babies!