In the back, no less, according to witnesses.
In fairness, the lapdog-walking perp was not carrying a legal ID, and allegedly did not give the park ranger his real name. For which he was "arrested on suspicion of failing to obey a lawful order, having dogs off-leash and knowingly providing false information," in addition to being electro-shocked from behind. Also, walking dogs without a leash in that location was perfectly legal until last month.
Watch Reason.tv's latest video about Tasers: