So, I woke up Monday morning and discovered that one of our guinea pigs was a girl. The way I discovered this was that there were four newborn guinea pigs in the cage with the two (previously considered male) guinea pigs I had seen the night before.
I had noticed that Snickers had grown fatter than Pebbles, but that was about as far as my consideration of the matter went during the gestation period.
All 6 are healthy, the parents are separated, in accordance with the back-to-back pregnancy admonitions from various Web sites, and in three weeks time the four of these guys will be ready for new homes. How many can I put you down for?