Doesn’t look deep enough for pig damage.
I don't think NZ has badgers so rules them outBadgers looking for worms and leather jackets. Have watched them doing this from a high seat on a local permission where we have no wild boar at all .. yet!! . boar damage would be more severe .check out wakehurst place lawn damage and compare .
52 posts and still not certain, for goodness sake get out and look for slots, that will tell you one way or the other for certain.
If it was pigs I would have expected to see or smell some dung as well.