Or maybe more mystifying than intriguing. In the sense of: how does anyone come into any contact with a hedgehog, never mind with lips?
From 538 Significant Digits:
Don’t kiss your hedgehog, says the Centers for Disease Control. And with good reason, apparently. Eleven people in the past few months have been infected with a type of salmonella; all but one of those had “contact” with a hedgehog. [The New York Times]