The hogs could well have been hibernating. The males here disappeared in September and they did the same last year, so I wasn’t too worried about them. They tend to come back earlier than the females – some as much as 2 months. Hibernation is more complicated than being only related to the temperature. Some of the females disappeared earlier than usual here too. It is easy to fear the worst, but it is possible they hibernated early as well. I wonder if it could be something to do with when they had hoglets – maybe if they didn’t have hoglets to care for, they could hibernate earlier? Possibly wishful thinking, but now we have the long wait to see who comes back next year.