The above document shows (in Spanish) the results from the DNA extraction test. It states:
There are more things in heaven and earth, Horatio,
If other, better known predators are in fact responsible for the deeds attributed to the Goatsucker, how can we account for the widespread mythology that surrounds the creature? There are a number of factors present in the Hispanic culture from which the Chupa was spawned, both historical and of recent vintage, that could explain how this particular legend came into being.