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Texas State University

Vampire Bats Myths and Facts

Educating the public about unique and misunderstood bat species

Vampire bats are the only mammals that feed entirely on blood. But contrary to the image of a huge beast with blood dripping from its fangs, the common vampire bat weighs less than two ounces.

Myths vs. Facts

Myth: Vampire bats are heading for Texas now.     

Fact: If Texas winters become warmer, they might be here in 50 years.

Myth: Vampire bats suck blood.

Fact: They use their razor-sharp front teeth to pierce the skin of livestock and then lap up the blood.

Myth: Vampire bats are huge.

Fact: They are 3 to 4 inches long with a wingspan of 7 inches, and weigh about as much as two AA batteries.

Myth: Vampire bats attack humans.

Fact: It might happen, but it is extremely rare.

Rising Star - Dr. Ivan Castro-Arellano

Dr. Ivan Castro-Arellano is an Assistant Professor of Biology at Texas State University.