Actually, it turns out that it was too cold a day even for pigs. So no wallowing. I was informed by Andy of Meadow Farm that in the cold and damp part of the year, George and Martha (the hogs) sleep 22 hours per day instead of their usual 20. I think perhaps I need to apply for a species transfer. 22 hours of sleep...
Griff isn't wallowing today, either. He is still on hiatus.