Thank you,It looks a bit like a spur to me (an overgrowth of dead skin). If you search on the forum there are many other posts about this.
However, I would monitor and see if it grows, the foot swells, the piggies look troubled by them and I would ask a vet to check them if that happens.
Thank you,
I have been checking it daily and it doesn’t seem to effect them or hurt at all.
Should I bathe it / put something on it to help, or just leave it and take action if it gets worse?