# El Chupacabra is an undiscovered blood-drinking predator

**Verdict: Contradicted.** The 1995 description traces to a witness who had seen the alien in the film Species; the later hairless “carcasses” have been DNA-tested as coyotes and dogs with severe mange, and the “drained” livestock were never actually exsanguinated.

Category: Cryptids & Monsters · Era: Post–Cold War era · First circulated: 1995 · Believed by: A recognisable folk figure across Puerto Rico, Mexico, and the US Southwest
URL: https://theconspiratory.com/theory/chupacabra

## Summary
A creature blamed for draining the blood of goats and other livestock, first reported in Puerto Rico in 1995 and later reimagined in Texas as a hairless, dog-like animal, with an origin story, and a physical explanation, that both trace cleanly back to real, documented sources.

## The claim
That an undiscovered predator (originally described as a spined, bipedal, alien-like creature and later as a hairless, canine-like animal) stalks Puerto Rico, Mexico, and the southwestern United States, killing livestock and pets by draining their blood.

## Origin and timeline
- Mar 1995: Eight sheep are found dead on a farm in Orocovis, Puerto Rico, each with what were reported as puncture wounds and no visible blood, the first killings later attributed to the chupacabra.
- Aug 1995: In Canóvanas, Puerto Rico, resident Madelyne Tolentino reports seeing the creature directly: a grey, spined, bipedal being with large dark eyes. Her description becomes the template for the modern chupacabra.
- 1995–1996: The story spreads rapidly across Puerto Rico, then Mexico and the rest of Latin America, with hundreds of livestock deaths attributed to the creature.
- 2004–2010: A series of hairless, dog-like carcasses are recovered in Texas (Elmendorf, Cuero, Hood County) and popularly dubbed “chupacabras.” Each is DNA-tested at a university laboratory.
- 2011: Investigator Benjamin Radford publishes Tracking the Chupacabra, tracing Tolentino's original description to a specific film she had recently seen.

## The evidence, claim by claim
- Claim: The very first chupacabra description in 1995 was detailed and consistent; witnesses could not have invented the same unfamiliar creature independently.
  Evidence: The description is detailed, but it is not independent. The key early witness, Madelyne Tolentino, described a grey, hunched, bipedal creature with a spined back and enormous black eyes, a close match to the alien “Sil” in the film Species, which opened in Puerto Rico weeks before her sighting. Investigator Benjamin Radford confirmed she had seen the film beforehand.
- Claim: Real dead livestock were found with puncture wounds and no blood, which ordinary predators do not do.
  Evidence: Dead livestock were real. But a Puerto Rico Department of Agriculture veterinarian who necropsied roughly 300 reported chupacabra victims found blood still present internally in every case, consistent with normal predation and postmortem blood pooling, not exsanguination by an unknown creature.
- Claim: Actual chupacabra carcasses (hairless, grey-skinned, with a ridged back) have been physically recovered, not just described secondhand.
  Evidence: Carcasses have been recovered, and DNA testing has been performed on several of them by university laboratories. Every one identified came back as a known North American canid (coyote, domestic dog, or a coyote hybrid) with the hairless, scaly, ridge-backed appearance explained by advanced sarcoptic or demodectic mange.

## Why people believe it
- The name itself supplies a ready explanation for a genuinely common and unpleasant sight: farmers who find a mange-ravaged coyote skulking near their livestock, or a dead animal with wounds they cannot immediately explain, already have a word for it.
- The story arrived at a receptive moment: mid-1990s Latin America was saturated with UFO and alien imagery, and a Hollywood-designed monster offered a vivid, ready-made vocabulary for an unfamiliar sight.
- Confirmation bias and media amplification did the rest: once outlets had a name and a description, ambiguous livestock deaths across two continents were retroactively sorted into the same bucket, and the legend outgrew any single sighting.

## Open questions
- The founding incident in each of the chupacabra's two major outbreaks was never individually, forensically confirmed the way the wider pattern later was. Puerto Rican police blamed feral dogs for the 1975 Moca killings, and the eight sheep found dead in Orocovis in March 1995 were reported drained of blood months before any organized necropsy program existed to check that claim, unlike the roughly 300 later 1995–96 cases a Department of Agriculture veterinarian did examine, in which blood was always still present. Ordinary predation, exaggerated by fear and after-the-fact storytelling, is almost certainly the explanation for both founding incidents too (it is the confirmed explanation for every later case that was actually examined) but neither original incident left behind the forensic paper trail that resolved the wider wave, so their specific causes are inferred by analogy rather than independently confirmed.

## Sources
- ¡El Chupacabra! The Science Behind a Latin American Mystery (EWF-099), John M. Tomeček, Scott Henke & Terry Hensley, DVM, Texas A&M AgriLife Extension (2017): https://texnat.tamu.edu/files/2021/10/Diseases-Chupacabra-2017.pdf
- A review of sarcoptic mange in North American wildlife, Niedringhaus, Brown, Sweeley & Yabsley, International Journal for Parasitology: Parasites and Wildlife (2019): https://pmc.ncbi.nlm.nih.gov/articles/PMC6599944/
- Tracking the Chupacabra: The Vampire Beast in Fact, Fiction, and Folklore, Benjamin Radford, University of New Mexico Press (2011): https://www.unmpress.com/9780826350152/tracking-the-chupacabra/
- Mythical, bloodsucking beast just a coyote (Cuero, TX DNA results), Associated Press / NBC News, citing Texas State University–San Marcos biologist Mike Forstner (2007): https://www.nbcnews.com/id/wbna21595838
- Elmendorf Beast DNA identification, University of California, Davis Veterinary Genetics Laboratory (2004): https://vgl.ucdavis.edu/
- From spooky lore to science fact: Unmasking the “chupacabra”, Texas A&M AgriLife Today (2024): https://agrilifetoday.tamu.edu/2024/10/15/unmasking-the-chupacabra/
- 1975, February–July: The Vampire of Moca, Anomalies: The Strange & Unexplained (anomalyinfo.com): http://anomalyinfo.com/Stories/1975-vampire-moca
- Texan claims she's found the mythical chupacabra, The Spokesman-Review (2007): https://www.spokesman.com/stories/2007/sep/02/texan-claims-shes-found-the-mythical-chupacabra/
- Chupacabra Revisited: Dueling Origin Stories of the Hispanic Vampire, Benjamin Radford, Skeptical Inquirer (2025): https://skepticalinquirer.org/2025/04/chupacabra-revisited-dueling-origin-stories-of-the-hispanic-vampire/

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