confront stranger

As you start to approach the guy you notice that what appeared to be a drunken stagger is now a pronounced limp. His foot is at an awkward angle to the rest of his leg. There’s also a dark stain over the front of his shirt. You briefly wonder if it’s Steve’s blood. The closer he gets to you the more you realize something is off. Do you try to talk to him or beat him up for biting your friend?