I used to be a delivery guy for FedEx and have had some weird things happen to me while making some deliveries. Nothing quite like this though. Poor guy got chased around by a dog who was probably just being playful/protective. I could be very wrong about assuming that.
Have you ever seen the episode of South Park with "Sexual Harassment Panda"? This video is a lot like that, except real, and funnier. If this Panda had shown up here in Casper, our kids would have probably shot it, skinned it, and made it into jerky...