The Chatacabra's soft tongue is the place to strike; look for openings after their attacks or when they become tired. Destroying the ore stuck to their forelimbs will leave them wide open to attack. They roam a wide area, so environmental elements like falliong boulders or Flashflies will be useful in taking them down. To give you an idea of how hungry these things can get, some hunters have witnessed them swallowing entire barrels during their charges.