Complex sentence: On many parts of the trail you may encounter wildlife that may pose a danger to life and health, including unrestrained or feral dogs, bears, snakes, wild boar, and alligators.
Split into simpler sentences: On many parts of the trail you may encounter wildlife that may pose a danger to life and health. Be watchful for unrestrained or feral dogs, bears, snakes, wild boar, and alligators.