Like black bears in the U.S., Eurasian brown bears avoid humans and rarely attack unless provoked or startled, which this one probably was. There have only been two fatal attacks in Sweden in the past century.
Experts recommend using the same tactics to avoid encounters with both species: make yourself big, speak loudly and never run away. (Be warned though: If you run into a grizzly bear in the U.S., this approach might not work.)
Perrson luckily kept his head on straight and both bear and human got away safely.
Watch the video below to hear Perrson's bear-repelling scream - and see incredible footage from his phone.