How? Feral likes fighting and testing his prey, through the whole movie we see him analyzing his prey before moving in, testing it by letting it attack him, then kill it, we see him do that with the snake, wolf and bear.
Also, Feral didn't simply "walk in the middle of 10 people" like some of you keep saying, he fell to a trap, why do you need to be purposely ignorant of what happens in the movie to try and make a point?