This is a very interesting video showing what looks like the famed chupacabra. It is either that or an old man shitting in the woods. It should not have been approached either way.
Here is some information from wikipedia about the chupacabra.
"The chupacabra is a cryptid said to inhabit parts of Latin America. It is associated particularly with Puerto Rico (where it was first reported), Mexico, Chile, Brazil and the United States, especially in the latter's Latin American communities."
"The name translates literally from the Portuguese and Spanish as "goat-sucker". It comes from the creature's reported habit of attacking and drinking the blood of livestock, especially goats."
"Physical descriptions of the creature vary. Sightings began in Puerto Rico in the early 1990s, and have since been reported as far north as Maine, and as far south as Chile."