Hi Hoglips,
all captive hogs will be keen to leave – even those who aren’t very well will scale vertical surfaces to escape.
is this hog a female do you know – and could she be lactating / feeding young? if so – its important you put her back where she was found ASAP as she may still have live babies that need her.
have you checked the hog over for anything obvious and did the hog eat and drink normally whilst captive?
when the hog curled up was it a nice round ball shape or a pinched rugby ball shape? have you weighed it and checked for tick or parasite overburdening?
Could your friend who found the hog not be in a position to support with food and drink where found for a while?
theory is its best to release back where found – unless there are circumstances that prevent this. One of the reasons for this is that they think hogs build up resistance to local bacteria etc which they wouldnt have in a new territory – however – its always a balance of risk. I think the risk here is that at this time of year, if a female, she could have young?
