Prey (2004)

When a number of hikers are found torn apart in a national park, the police and park rangers alike are left baffled. Slowly their darkest nightmares are revealed as surmounting evidence points to the existence of a terrifying beast, known only in folk-lore. With the rangers trapped in the park, they're forced to make their escape on foot, through the forest. Along for the ride is an obsessed Yowie hunter with a secret agenda. Only then does the true nature of the beast reveal itself.