Found one of these bad boys in the southern cave of the island. He killed my dodos and then shit them out almost simultaneously. I was not prepared with my 3 tranq arrows and metal hatchet. He bit me in the ass but I managed to outrun him.
This thing CAN HANG FROM CEILINGS! Scared the shit out of me when i was walking in a cave and 2 fell from the ceiling. Watch out for the mega rabies as it will drain your health. Make spare beds when in the cave to save your stuff if you die. Carry antidote as well as a saving grace.