Vampire Bats Survive by Only Eating Blood—Now We Know How

Living off blood isn't easy, but the tropical mammals evolved clever adaptations to make it work, a new study says.

In a new study, researchers analyzed the DNA and microbiome of three species of vampire bat, the only obligate blood-eating mammals (aka sanguivores) in the world. Their results revealed that gut bacteria are key to the bats' ability to survive on the vital red liquid. (See "The Vampires That Feed on Vampires.")

It seems that these gut critters evolved to help the bats live on blood meals, says study leader Marie Lisandra Zepeda Mendoza, a geneticist at the University of Copenhagen. The "holistic" study, which examined both the microbiota and the bat's DNA, is among the first of its kind to investigate how vampire bats digest blood, Mendoza says by email.

Hunting under the cover of darkness in

DON'T MISS THE REST OF THIS STORY!
Create a free account to continue and get unlimited access to hundreds of Nat Geo articles, plus newsletters.

Create your free account to continue reading

No credit card required. Unlimited access to free content.
Or get a Premium Subscription to access the best of Nat Geo - just $19
SUBSCRIBE

Read This Next

'World’s worst shipwreck' was bloodier than we thought
World’s first ultrasounds of wild manta rays reveal a troubling truth
Titanic was found during secret Cold War Navy mission

Go Further

Subscriber Exclusive Content

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet