Hi Frank H
Just a word of caution – simbo65’s post could be misinterpreted. If you think a hog is distressed because it is sick or injured then contact your nearest carer for advice. (you can find contact details from the BHPS 01584 890801).
But if you see hedgehogs involved in their natural behaviour you should not intervene. Sometimes hedgehogs can appear to be fairly aggressive and biff each other and sometimes seem to shake each other or one even one roll another a fair distance. It may appear that the rolled up one is distressed and it may not be very happy, but if it is natural behaviour between two hedgehogs they should be left alone to sort it out between them. Normally the one who gets rolled up, eventually unrolls and goes on it’s way. They are cushioned to a degree by their spines.
Good hedgehog sounds link, simbo65.