Darren Naish had written about the possibly-non-extinct giant vampire bats of the Pleistocene in an earlier article:
I had heard about Giant Vampire bats as candidates for Chupacabras attacks, including sightings which specifically called them Giant Vampire bats, since I started the Yahoo group Frontiers of Zoology back in 2006, but as it later turned out, these would be the giant FALSE Vampire bats since they had a wingspan in the range of 5-7 feet across.
The Spectral Bat
The Spectral Bat (V. spectrum) is a large, carnivorous leaf-nosed bat. Some alternate names for this species are the False Vampire Bat, Linnaeus's False Vampire Bat and the Spectral Vampire Bat. Confusingly, they are not related to the Old World family of large carnivorous bats to be found in the Megadermatidae that are also called false vampires
This species is the largest bat in the New World and the largest carnivorous bat in the world, having a wingspan of eighty centimeters or so (almost three feet) and a body length and weight of 125–135 millimeters and 145–190 grams respectively, though larger specimens with wingspans of over one hundred centimeters are not unknown. The ears are very long and rounded. There is no discernible tail, but the tail membrane is long and broad. The large feet are robust, with long curved claws. The muzzle is long and narrow, and the teeth are strong with the upper canines being well developed. The skull is robust and has a well-developed sagittal crest which projects pass the foramen magnum. The noseleaf is medium-sized, lance-shaped, horseshoe and spear with continuous rim raised to form a hollow cup around the nostrils. The fur on the dorsal region is long, soft and is reddish brown in color. The fur on the underside is shorter and paler. The spectral bat is a fairly agile and powerful flier. It has been described as flying "at low speeds in crowded flight spaces, maneuvering deftly, perhaps often landing to make captures, and having the low speed lift capabilities to carry off large prey items".When in flight, spectral bats produce pulses of 1.5-1.8 milliseconds. The terminal phase of echolocation seems to be very short, being 0.5 msec or less. It is likely this species uses short pulses of low intensities because it flies close to obstacles and near the ground. It appears that spectral bats can discriminate between two similar targets.
False vampire bats are true carnivores and larger ones could actually be dangerous to domesticated animals and other prey. Some of the reports mistaking them for Vampire bats still speak of them as mobbing on sheep and goats, which invariably die from the wounds thereafter. The bats are also not shy to bite humans (attacks have been reported including in the Southern United States, Old
In tallying up Chupacabras reports, it seems to me that a glaring omission has been made.