The Chupacabra ('goat-sucker') as a modern cryptid tradition was born in the small agricultural town of Canóvanas, Puerto Rico in March 1995, when farmer Juan Collazo discovered eight of his sheep dead in a single night, each drained of blood through two neat puncture wounds in the chest. Over the following nine months, more than 150 farm animals — goats, sheep, pigs, ducks, chickens, rabbits, and cows — were found killed in identical fashion across the Canóvanas, Morovis, Caguas, and Humacao municipalities of the island's interior. The attacks were distinguished by the precision of the puncture wounds, the complete absence of blood in the carcasses despite no pooling at the scene, and the apparent disinterest of the predator in consuming any flesh.
Madelyne Tolentino, a housewife in Canóvanas, produced the definitive sighting description on August 11, 1995, telling the Puerto Rican tabloid El Vocero of an approximately four-foot-tall bipedal creature with leathery skin, large red or black eyes, rows of spikes running from head to tail, and long clawed hands. Her description — widely repeated throughout Puerto Rico and subsequently across Latin America — was subsequently linked by folklorist Benjamin Radford to the 1995 film 'Species,' which had been released in Puerto Rico days before her report. The attacks themselves, however, were indisputably real: veterinarians from the University of Puerto Rico examined dozens of carcasses and confirmed the unusual pattern of exsanguination through paired puncture wounds.
Subsequent Chupacabra reports spread through Dominican Republic, Mexico, Texas, Chile, Colombia, and Argentina over the following decade, mutating the description as it went. Texas-area 'Chupacabra' carcasses from the mid-2000s have consistently DNA-resolved as mange-afflicted coyotes, foxes, or raccoons. The Puerto Rican attacks themselves have never been conclusively attributed to any known predator — large monkeys, escaped exotic species, feral dogs, and rhesus macaques have all been proposed. The case remains the foundational modern Latin American cryptid event and the single largest cluster of unexplained livestock exsanguination in documented history.