Radford, who has a degree in psychology, spent years investigating the chupacabra, even traveling to Puerto Rico and the jungles of Nicaragua in search of information about the creature. After the lengthy investigations, he doesn’t think Tolentino intentionally made up the sighting.
"There’s a phenomenon known as confabulation, where people confuse things seen in dreams or movies as happening in real life," he explained. "It's a natural, normal thing, and there was a fertile social ground for her story."
He said that vampire tales tend to emerge out of periods of tremendous political and economic uncertainty and tension. Different versions of the vampire story have been spun all around the world.
"In early 1990s Puerto Rico, there was a preexisting belief that something weird was attacking animals and draining them of their blood," he said.
In this photo, Radford consults with a tracker in the jungles of Nicaragua, searching for a population of chupacabras.