newforestexplorersguide.co.uk/…/grooming.html

Mutual grooming between a mixture of adults and cubs serves the same function, but additionally is surely a sign of affection that strengthens the bond between the animals.

A variety of grooming postures are adopted by badgers but to onlookers, the one that is most likely to raise a smile involves the badger sitting or lying back on its haunches and, with seemingly not a care in the world (and with all hints of modesty forgotten), enjoying prolonged scratches and nibbles at its under-parts and nether regions.

That being said, that’s the European badger. Apparently the American badger isn’t very social:

a-z-animals.com/…/american-badger-vs-european-bad…

American badger: Nocturnal unless in remote areas; powerful digger and generally more solitary than other species. Frequently hunts with coyotes.

European badger: Digs complicated dens and burrows with their familial group; one of the most social badger species. Depending on location, hibernation may occur.