Anointing

When you come across a hedgehog biting and licking something, then produce some white froth on its tongue before contorting its body to spit the froth onto its quills, then you’ve just witnessed a hedgehog self-anointing.

It is still unknown why hedgehogs anoint, but reasonable explanations would be that it is attempting to camouflage itself using the scent from the source from predators, or trying to create a toxic layer to protect itself from enemies (hedgehogs are, after all, immune to snake venoms).