It isn’t really rare, as such, it’s just that people don’t tend to notice their tails as they’re quite small. Although some of the hogs tend to keep them fairly well tucked under. It varies a bit from one hog to another whether they let on that they really do have tails! Hogs can be very secretive about some things!
But with that nesting behaviour, it’s possible she’s preparing a nest to give birth in – assuming she really is a female. Sorry I was skipping parts, so may have missed her illustrating that she really was a female by showing her underneath!
I hope all goes well for her if she is about to produce.
Good luck and happy hog watching!
