Chupacabras, often referred to as "chucarbras," are mythical creatures in Latin American folklore, particularly in Puerto Rico and Mexico. They are typically described as small, reptilian beings that drain the blood of livestock, especially goats. Sightings of chupacabras have sparked various theories about their origins, ranging from alien encounters to genetic experiments. Despite numerous reports and sightings, no credible evidence of their existence has been found.